Dr Ravi Philip Rajkumar
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Select Department: 
About Me: 
Consultant in-charge, Marital and Psychosexual Clinic Consultant in-charge, Memory Clinic
Medical Registration number: 
72163 (Tamil Nadu Medical Council)
OPD Timing: 
Tuesday, Thursday, Saturday – 9 am to 1 pm
Academic Qualifications: 

MD (Psychiatry)

Special Area of Interest: 
Comorbidity,Psychopharmacology ,Mood and anxiety disorders ,Psychoimmunology and Attachment theory

1: Rajkumar RP. Does Culture Influence Antidepressant Response? A Preliminary Investigation of Randomized Controlled Trials of Fluoxetine. Cureus. 2021 May

17;13(5):e15079. doi: 10.7759/cureus.15079. PMID: 34017669; PMCID: PMC8129591.

2: Rajkumar RP. Cross-National Variations in COVID-19 Mortality: The Role of Diet, Obesity and Depression. Diseases. 2021 May 6;9(2):36. doi:

10.3390/diseases9020036. PMID: 34066585; PMCID: PMC8161818.

3: Rajkumar RP. Suffering and Salutogenesis: A Conceptual Analysis of Lessons for Psychiatry From Existential Positive Psychology (PP2.0) in the Setting of

the COVID-19 Pandemic. Front Psychol. 2021 Apr 9;12:646334. doi:

10.3389/fpsyg.2021.646334. PMID: 33897551; PMCID: PMC8064119.

4: Rajkumar RP. Harnessing the Neurobiology of Resilience to Protect the Mental Well-Being of Healthcare Workers During the COVID-19 Pandemic. Front Psychol.

2021 Mar 18;12:621853. doi: 10.3389/fpsyg.2021.621853. PMID: 33815205; PMCID:


5: Ramesh R, Sundaresh A, Rajkumar RP, Negi VS, Vijayalakshmi MA, Krishnamoorthy

R, Tamouza R, Leboyer M, Kamalanathan AS. DNA hydrolysing IgG catalytic antibodies: an emerging link between psychoses and autoimmunity. NPJ Schizophr.

2021 Feb 26;7(1):13. doi: 10.1038/s41537-021-00143-6. PMID: 33637732; PMCID:


6: Rajkumar RP. A Biopsychosocial Approach to Understanding Panic Buying: Integrating Neurobiological, Attachment-Based, and Social-Anthropological

Perspectives. Front Psychiatry. 2021 Feb 24;12:652353. doi:

10.3389/fpsyt.2021.652353. PMID: 33716838; PMCID: PMC7943846.

7: Faraone SV, Banaschewski T, Coghill D, Zheng Y, Biederman J, Bellgrove MA, Newcorn JH, Gignac M, Al Saud NM, Manor I, Rohde LA, Yang L, Cortese S, Almagor

D, Stein MA, Albatti TH, Aljoudi HF, Alqahtani MMJ, Asherson P, Atwoli L, Bölte S, Buitelaar JK, Crunelle CL, Daley D, Dalsgaard S, Döpfner M, Espinet S,

Fitzgerald M, Franke B, Gerlach M, Haavik J, Hartman CA, Hartung CM, Hinshaw SP, Hoekstra PJ, Hollis C, Kollins SH, Sandra Kooij JJ, Kuntsi J, Larsson H, Li T,

Liu J, Merzon E, Mattingly G, Mattos P, McCarthy S, Mikami AY, Molina BSG, Nigg JT, Purper-Ouakil D, Omigbodun OO, Polanczyk GV, Pollak Y, Poulton AS, Rajkumar

RP, Reding A, Reif A, Rubia K, Rucklidge J, Romanos M, Ramos-Quiroga JA, Schellekens A, Scheres A, Schoeman R, Schweitzer JB, Shah H, Solanto MV, Sonuga-

Barke E, Soutullo C, Steinhausen HC, Swanson JM, Thapar A, Tripp G, van de Glind G, Brink WVD, Van der Oord S, Venter A, Vitiello B, Walitza S, Wang Y. The World

Federation of ADHD International Consensus Statement: 208 Evidence-based conclusions about the disorder. Neurosci Biobehav Rev. 2021 Feb

4:S0149-7634(21)00049-X. doi: 10.1016/j.neubiorev.2021.01.022. Epub ahead of

print. PMID: 33549739.

8: Rajkumar RP. The Relationship Between Demographic, Socioeconomic, and Health-Related Parameters and the Impact of COVID-19 on 24 Regions in India:

Exploratory Cross-Sectional Study. JMIR Public Health Surveill. 2020 Nov

27;6(4):e23083. doi: 10.2196/23083. PMID: 33147164; PMCID: PMC7717919.

9: Rajkumar RP. Sleep, physical activity and mental health during the COVID-19 pandemic: complexities and opportunities for intervention. Sleep Med. 2021

Jan;77:307-308. doi: 10.1016/j.sleep.2020.10.004. Epub 2020 Oct 10. PMID:

33594979; PMCID: PMC7547309.

10: Rajkumar RP. Warriors, Worriers, and COVID-19: An Exploratory Study of the Catechol O-Methyltransferase Val158Met Polymorphism Across Populations. Cureus.

2020 Aug 28;12(8):e10103. doi: 10.7759/cureus.10103. PMID: 32879833; PMCID:


11: Rajkumar RP. Depressive Realism and Functional Fear: An Alternative Perspective on Psychological Distress During the COVID-19 Pandemic. Prim Care

Companion CNS Disord. 2020 Jul 23;22(4):20com02714. doi: 10.4088/PCC.20com02714.

PMID: 32706943.

12: Rajkumar RP. Prior infection with intestinal coronaviruses moderates symptom severity and mortality in patients with COVID-19: A hypothesis and preliminary

evidence. Med Hypotheses. 2020 Oct;143:110116. doi: 10.1016/j.mehy.2020.110116.

Epub 2020 Jul 18. PMID: 32721808; PMCID: PMC7367779.

13: Rajkumar RP. Attachment Theory and Psychological Responses to the COVID-19 Pandemic: A Narrative Review. Psychiatr Danub. 2020 Summer;32(2):256-261. doi:

10.24869/psyd.2020.256. PMID: 32796795.

14: Rajkumar RP. Bipolar disorder, COVID-19, and the risk of relapse. Bipolar Disord. 2020 Sep;22(6):640. doi: 10.1111/bdi.12947. Epub 2020 Jun 18. PMID:

32511849; PMCID: PMC7300969.

15: Rajkumar RP. The DOSMD challenge and the COVID-19 conundrum. Schizophr Res. 2020 Aug;222:475-476. doi: 10.1016/j.schres.2020.06.010. Epub 2020 Jun 15. PMID:

32553434; PMCID: PMC7294289.

16: Rajkumar RP. Lithium as a candidate treatment for COVID-19: Promises and pitfalls. Drug Dev Res. 2020 Nov;81(7):782-785. doi: 10.1002/ddr.21701. Epub

2020 Jun 10. PMID: 32524646; PMCID: PMC7307055.

17: Rajkumar RP. Suicides related to the COVID-19 outbreak in India: A pilot study of media reports. Asian J Psychiatr. 2020 Oct;53:102196. doi:

10.1016/j.ajp.2020.102196. Epub 2020 Jun 5. PMID: 32534434; PMCID: PMC7274089.

18: Rajkumar RP. Contamination and infection: What the coronavirus pandemic could reveal about the evolutionary origins of obsessive-compulsive disorder.

Psychiatry Res. 2020 May 5;289:113062. doi: 10.1016/j.psychres.2020.113062. Epub

ahead of print. PMID: 33242801.

19: Rajkumar RP. Ayurveda and COVID-19: Where psychoneuroimmunology and the

meaning response meet. Brain Behav Immun. 2020 Jul;87:8-9. doi:

10.1016/j.bbi.2020.04.056. Epub 2020 Apr 22. PMID: 32334064; PMCID: PMC7175849.

20: Rajkumar RP. COVID-19 and mental health: A review of the existing literature. Asian J Psychiatr. 2020 Aug;52:102066. doi:

10.1016/j.ajp.2020.102066. Epub 2020 Apr 10. PMID: 32302935; PMCID: PMC7151415.

21: Manohar H, Kandasamy P, Chandrasekaran V, Rajkumar RP. Can RCTs capture it all?-Need for qualitative studies on parent-mediated interventions for children

with Autism Spectrum Disorder. Asian J Psychiatr. 2020 Feb;48:101915. doi:

10.1016/j.ajp.2019.101915. Epub 2019 Dec 26. PMID: 31896437.

22: Manohar H, Kandasamy P, Chandrasekaran V, Rajkumar RP. Brief Parent-Mediated Intervention for Children with Autism Spectrum Disorder: A Feasibility Study

from South India. J Autism Dev Disord. 2019 Aug;49(8):3146-3158. doi:

10.1007/s10803-019-04032-x. PMID: 31053990.

23: Manoharan A, Shewade DG, Ravindranath PA, Rajkumar RP, Ramprasad VL, Adithan

S, Damodaran SE. Resequencing <i>CYP2D6</i> gene in Indian population: <i>CYP2D6*41</i> identified as the major reduced function allele.

Pharmacogenomics. 2019 Jul;20(10):719-729. doi: 10.2217/pgs-2019-0049. Epub 2019

Aug 1. PMID: 31368850.

24: Ramalingam A, Sarkar S, Premarajan KC, Rajkumar RP, Subrahmanyam DK.

Prevalence and correlates of elder abuse: A cross-sectional, community-based study from rural Puducherry. Natl Med J India. 2019 Mar-Apr;32(2):72-76. doi:

10.4103/0970-258X.275344. PMID: 31939400.

25: Vengadavaradan A, Subramanian K, Rajkumar RP. Atypical Limbic Encephalitis and its Complex Psychiatric Presentations: Implications for Diagnosis and

Management. Indian J Psychol Med. 2019 Mar-Apr;41(2):187-190. doi:

10.4103/IJPSYM.IJPSYM_233_18. PMID: 30983671; PMCID: PMC6436404.

26: Sundaresh A, Oliveira J, Chinnadurai RK, Rajkumar RP, Hani L, Krishnamoorthy

R, Leboyer M, Negi VS, Tamouza R. <i>IL6/IL6R</i> genetic diversity and plasma IL6 levels in bipolar disorder: An Indo-French study. Heliyon. 2019 Jan

7;5(1):e01124. doi: 10.1016/j.heliyon.2019.e01124. PMID: 30662970; PMCID:


27: Manohar H, Kandasamy P, Chandrasekaran V, Rajkumar RP. Early Diagnosis and Intervention for Autism Spectrum Disorder: Need for Pediatrician-Child

Psychiatrist Liaison. Indian J Psychol Med. 2019 Jan-Feb;41(1):87-90. doi:

10.4103/IJPSYM.IJPSYM_154_18. PMID: 30783314; PMCID: PMC6337936.

28: Alladi CG, RajKumar RP, Adithan S, Marie-Claire C, Bellivier F, Shewade DG.

Dopamine (DRD2) and Serotonin (HTR2A, 2C) Receptor Gene Polymorphisms do not influence early response to Risperidone in South Indian Patients with

Schizophrenia. Fundam Clin Pharmacol. 2019 Jun;33(3):355-364. doi:

10.1111/fcp.12424. Epub 2018 Nov 21. PMID: 30332506.

29: Ramalingam A, Sarkar S, Premarajan KC, Rajkumar RP, Subrahmanyam DK.

Prevalence and Correlates of Common Mental Disorders among the Rural Elderly in Puducherry, South India: A Cross-sectional Community-based Study. Int J Prev

Med. 2018 Jul 30;9:65. doi: 10.4103/ijpvm.IJPVM_386_15. PMID: 30147854; PMCID:


30: Sundaresh A, Wu CL, Chinnadurai RK, Rajkumar RP, Mariaselvam CM, LeMaoult J,

Krishnamoorthy R, Leboyer M, Negi VS, Tamouza R. The HLA-G Genetic Contribution to Bipolar Disorder: A Trans-Ethnic Replication. Immunol Invest. 2018

Aug;47(6):593-604. doi: 10.1080/08820139.2018.1469649. Epub 2018 May 8. PMID:


31: Manohar H, Kuppili PP, Kandasamy P, Chandrasekaran V, Rajkumar RP. Implications of comorbid ADHD in ASD interventions and outcome: Results from a

naturalistic follow up study from south India. Asian J Psychiatr. 2018

Mar;33:68-73. doi: 10.1016/j.ajp.2018.03.009. Epub 2018 Mar 2. PMID: 29544110.

32: Subramanian K, Sarkar S, Kattimani S, Rajkumar RP. Influence of age at onset on the course and outcome of bipolar I disorder: Findings from a retrospective

study. Asian J Psychiatr. 2018 Jan;31:135-136. doi: 10.1016/j.ajp.2018.01.015.

Epub 2018 Feb 9. PMID: 29494947.

33: Manohar H, Pravallika M, Kandasamy P, Chandrasekaran V, Rajkumar RP. Role of

Exclusive Breastfeeding in Conferring Protection in Children At-Risk for Autism

Spectrum Disorder: Results from a Sibling Case-control Study. J Neurosci Rural

Pract. 2018 Jan-Mar;9(1):132-136. doi: 10.4103/jnrp.jnrp_331_17. PMID: 29456357;

PMCID: PMC5812137.

34: Kavitha RR MS, Kamalam S PhD, Rajkumar RP MD. Functional Ability of Clients with Bipolar Disorders in Tertiary Hospital, Puducherry. Int J Community Based

Nurs Midwifery. 2018 Jan;6(1):21-28. PMID: 29344532; PMCID: PMC5747569.

35: Rajan TM, Bharadwaj B, Rajkumar RP, Adole PS. Frequency and correlates of tardive dyskinesia in Indian patients with type I bipolar disorder. Asian J

Psychiatr. 2018 Feb;32:92-98. doi: 10.1016/j.ajp.2017.12.001. Epub 2017 Dec 5.

PMID: 29222987.

36: Krishnan B, Rajkumar RP. Psychological Consequences of Maxillofacial Trauma in the Indian Population: A Preliminary Study. Craniomaxillofac Trauma Reconstr.

2018 Sep;11(3):199-204. doi: 10.1055/s-0037-1604426. Epub 2017 Jul 19. PMID:

30087749; PMCID: PMC6078699.

37: Subramanian K, Rajan TM, Menon V, Rajkumar RP. Converging Neurobiological Evidence In Primary Polydipsia Resembling Obsessive-Compulsive Disorder. Indian

J Psychol Med. 2017 May-Jun;39(3):369-372. doi: 10.4103/0253-7176.207327. PMID:

28615780; PMCID: PMC5461856.

38: Shaik S, Rajkumar RP, Menon V, Sarkar S. Gender, Life Events, and Depression: An Exploratory Study. Indian J Psychol Med. 2017 May-

Jun;39(3):330-335. doi: 10.4103/0253-7176.207339. PMID: 28615769; PMCID:


39: Alladi CG, Mohan A, Shewade DG, Rajkumar RP, Adithan S, Subramanian K. Risperidone-Induced Adverse Drug Reactions and Role of <i>DRD2</i> (-141 C

Ins/Del) and <i>5HTR2C</i> (-759 C>T) Genetic Polymorphisms in Patients with

Schizophrenia. J Pharmacol Pharmacother. 2017 Jan-Mar;8(1):28-32. doi:

10.4103/jpp.JPP_197_16. PMID: 28405133; PMCID: PMC5370325.

40: Mahadevan J, Sundaresh A, Rajkumar RP, Muthuramalingam A, Menon V, Negi VS,

Sridhar MG. An exploratory study of immune markers in acute and transient psychosis. Asian J Psychiatr. 2017 Feb;25:219-223. doi:

10.1016/j.ajp.2016.11.010. Epub 2016 Dec 1. PMID: 28262155.

41: Muthuramalingam A, Menon V, Rajkumar RP, Negi VS. Effect of Fluoxetine on Inflammatory Cytokines in Drug-Naive Major Depression: A Short-Term Prospective

Study from South India. J Clin Psychopharmacol. 2016 Dec;36(6):726-728. doi:

10.1097/JCP.0000000000000606. PMID: 27753707.

42: Kattimani S, Subramanian K, Sarkar S, Rajkumar RP, Balasubramanian S.

History of Lifetime suicide attempt in bipolar I disorder: its correlates and effect on illness course. Int J Psychiatry Clin Pract. 2017 Jun;21(2):118-124.

doi: 10.1080/13651501.2016.1250912. Epub 2016 Nov 17. PMID: 27854557.

43: Thamizh JS, Menon V, Selvakumar N, Rajkumar RP. Treatment-Emergent Psychosis

With Disulfiram in a Patient With Late-Onset Alcohol Use Disorder and No Contributory Factors. J Clin Psychopharmacol. 2016 Oct;36(5):535-7. doi:

10.1097/JCP.0000000000000561. PMID: 27518475.

44: Menon V, Thamizh JS, Rajkumar RP, Selvakumar N. Neuroleptic malignant syndrome (or malignant extrapyramidal autonomic syndrome): Time to revisit

diagnostic criteria and terminology? Aust N Z J Psychiatry. 2017 Jan;51(1):102.

doi: 10.1177/0004867416664592. Epub 2016 Sep 28. PMID: 27565995.

45: Selvakumar N, Selvapandian Thamizh J, Menon V, Rajkumar RP. Black hairy tongue (Lingua villosa nigra) in a young male precipitated by Lithium. Asian J

Psychiatr. 2016 Dec;24:71-72. doi: 10.1016/j.ajp.2016.08.021. Epub 2016 Aug 30.

PMID: 27931913.

46: Manoharan A, Shewade DG, Rajkumar RP, Adithan S. Serotonin transporter gene (SLC6A4) polymorphisms are associated with response to fluoxetine in south

Indian major depressive disorder patients. Eur J Clin Pharmacol. 2016

Oct;72(10):1215-1220. doi: 10.1007/s00228-016-2099-9. Epub 2016 Jul 20. PMID:


47: Sarkar S, Sakey S, Mathan K, Bharadwaj B, Kattimani S, Rajkumar RP.

Assessing catatonia using four different instruments: Inter-rater reliability and prevalence in inpatient clinical population. Asian J Psychiatr. 2016

Oct;23:27-31. doi: 10.1016/j.ajp.2016.07.003. Epub 2016 Jul 11. PMID: 27969074.

48: Ganapathy S, Muraleedharan A, Sathidevi PS, Chand P, Rajkumar RP. CometQ: An automated tool for the detection and quantification of DNA damage using comet

assay image analysis. Comput Methods Programs Biomed. 2016 Sep;133:143-154. doi:

10.1016/j.cmpb.2016.05.020. Epub 2016 Jun 2. PMID: 27393806.

49: Menon V, Rajkumar RP, Thamizh JS, Selvakumar N. Atypical neuroleptic malignant syndrome in a young male precipitated by oral sodium valproate. Aust N

Z J Psychiatry. 2016 Dec;50(12):1208-1209. doi: 10.1177/0004867416649035. Epub

2016 May 19. PMID: 27207860.

50: Charan A, Shewade DG, Rajkumar RP, Chandrasekaran A. Relation between serum prolactin levels and antipsychotic response to risperidone in patients with

schizophrenia. Psychiatry Res. 2016 Jun 30;240:209-213. doi:

10.1016/j.psychres.2016.04.001. Epub 2016 Apr 2. PMID: 27111215.

51: Manoharan A, Rajkumar RP, Shewade DG, Sundaram R, Muthuramalingam A, Paul A.

Evaluation of interleukin-6 and serotonin as biomarkers to predict response to fluoxetine. Hum Psychopharmacol. 2016 May;31(3):178-84. doi: 10.1002/hup.2525.

Epub 2016 Mar 27. PMID: 27018372.

52: Muthuramalingam A, Menon V, Rajkumar RP, Negi VS. Is Depression an Inflammatory Disease? Findings from a Cross-Sectional Study at a Tertiary Care

Center. Indian J Psychol Med. 2016 Mar-Apr;38(2):114-9. doi:

10.4103/0253-7176.178772. PMID: 27114622; PMCID: PMC4820549.

53: Rajkumar RP. Acute polymorphic psychotic disorder: Differences from other acute and transient psychoses. Asia Pac Psychiatry. 2016 Mar;8(1):102-3. doi:

10.1111/appy.12224. PMID: 26871426.

54: Subramanian K, Kattimani S, Sarkar S, Rajkumar RP. Current adherence attitudes can reflect the course and outcome of bipolar disorder-type I. Asian J

Psychiatr. 2016 Apr;20:11. doi: 10.1016/j.ajp.2016.01.007. Epub 2016 Feb 2.

PMID: 27025464.

55: Kattimani S, Sarkar S, Bharadwaj B, Rajkumar RP. An Exploration of the

Relationship Between Spirituality and State and Trait Anger Among Medical Students. J Relig Health. 2015 Dec;54(6):2134-41. doi:

10.1007/s10943-014-9933-0. PMID: 25173362.

56: Rajkumar RP. Distinctive clinical features of Dhat syndrome with comorbid sexual dysfunction. Asian J Psychiatr. 2016 Feb;19:1-2. doi:

10.1016/j.ajp.2015.11.004. Epub 2015 Nov 26. PMID: 26957326.

57: Rajkumar RP. Recurrent unipolar mania: A comparative, cross-sectional study. Compr Psychiatry. 2016 Feb;65:136-40. doi: 10.1016/j.comppsych.2015.11.008. Epub

2015 Nov 23. PMID: 26774002.

58: Karthick S, Kattimani S, Sarkar S, Bharadwaj B, Rajkumar RP. Quality of Sleep in Patients With Bipolar I Disorder During Remission. J Psychiatr Pract.

2015 Nov;21(6):419-26. doi: 10.1097/PRA.0000000000000116. PMID: 26554324.

59: Rajkumar RP. Correlates of Suicide-Related Ideations and Attempts in Patients with Acute and Transient Psychotic Disorder. Clin Schizophr Relat

Psychoses. 2018 Spring;12(1):42-47. doi: 10.3371/CSRP.RA.070415. Epub 2015 Jul

28. PMID: 26218238.

60: Subramanian K, Kattimani S, Rajkumar RP, Bharadwaj B, Sarkar S. What happens to episode duration and cycle length over the course of bipolar disorder?

Australas Psychiatry. 2016 Aug;24(4):376-80. doi: 10.1177/1039856215592322. Epub

2015 Jul 2. PMID: 26139697.

61: Rajkumar RP, Sarkar S. Seasonality of Admissions for Mania: Results From a General Hospital Psychiatric Unit in Pondicherry, India. Prim Care Companion CNS

Disord. 2015 Jun 18;17(3):10.4088/PCC.15m01780. doi: 10.4088/PCC.15m01780. PMID:

26644962; PMCID: PMC4578914.

62: Muraleedharan A, Menon V, Rajkumar RP, Chand P. Assessment of DNA damage and repair efficiency in drug naïve schizophrenia using comet assay. J Psychiatr

Res. 2015 Sep;68:47-53. doi: 10.1016/j.jpsychires.2015.05.018. Epub 2015 Jun 10.

PMID: 26228400.

63: Kattimani S, Sarkar S, Rajkumar RP, Menon V. Stressful life events, hopelessness, and coping strategies among impulsive suicide attempters. J

Neurosci Rural Pract. 2015 Apr-Jun;6(2):171-6. doi: 10.4103/0976-3147.153222.

PMID: 25883475; PMCID: PMC4387806.

64: Rajkumar RP, Kumaran AK. Depression and anxiety in men with sexual dysfunction: a retrospective study. Compr Psychiatry. 2015 Jul;60:114-8. doi:

10.1016/j.comppsych.2015.03.001. Epub 2015 Mar 19. PMID: 25818906.

65: Rajkumar RP. Recurrent acute and transient psychotic disorder: A pilot study. Asian J Psychiatr. 2015 Apr;14:61-4. doi: 10.1016/j.ajp.2015.02.006. Epub

2015 Mar 9. PMID: 25801801.

66: Rajkumar RP. The impact of disrupted childhood attachment on the presentation of psychogenic erectile dysfunction: an exploratory study. J Sex

Med. 2015 Mar;12(3):798-803. doi: 10.1111/jsm.12815. Epub 2015 Jan 8. PMID:


67: Rajkumar RP. Depressive Symptoms during an Acute Schizophrenic Episode: Frequency and Clinical Correlates. Depress Res Treat. 2015;2015:674641. doi:

10.1155/2015/674641. Epub 2015 Nov 18. PMID: 26664745; PMCID: PMC4667057.

68: Rajkumar RP. The Impact of Childhood Adversity on the Clinical Features of Schizophrenia. Schizophr Res Treatment. 2015;2015:532082. doi:

10.1155/2015/532082. Epub 2015 Aug 4. PMID: 26345291; PMCID: PMC4539488.

69: Rajkumar RP. Anticipation with phenotypic variation in three father-son pairs with affective disorder: a case series. East Asian Arch Psychiatry. 2014

Dec;24(4):165-8. PMID: 25482836.

70: Karthick S, Kattimani S, Rajkumar RP, Bharadwaj B, Sarkar S. Long term course of bipolar I disorder in India: using retrospective life chart method. J

Affect Disord. 2015 Mar 1;173:255-60. doi: 10.1016/j.jad.2014.10.056. Epub 2014

Nov 13. PMID: 25462425.

71: Shaik S, Rajkumar RP. Post-vasectomy depression: a case report and literature review. Ment Illn. 2014 Sep 19;6(2):5494. doi: 10.4081/mi.2014.5494.

PMID: 25553234; PMCID: PMC4274458.

72: Rajkumar RP, Kumaran AK. The association of anxiety with the subtypes of premature ejaculation: a chart review. Prim Care Companion CNS Disord. 2014 Jul

31;16(4):10.4088/PCC.14m01630. doi: 10.4088/PCC.14m01630. PMID: 25664211; PMCID:


73: Rajkumar RP. Childhood attachment and schizophrenia: the "attachment-developmental-cognitive" (ADC) hypothesis. Med Hypotheses. 2014

Sep;83(3):276-81. doi: 10.1016/j.mehy.2014.05.017. Epub 2014 Jun 7. PMID:


74: Rajkumar RP, Melvin G. Pharmacovigilance for psychiatrists: An introduction.

Indian J Psychiatry. 2014 Apr;56(2):176-81. doi: 10.4103/0019-5545.130502. PMID:

24891707; PMCID: PMC4040067.

75: Rajkumar RP. Unmodified electroconvulsive therapy: a false dilemma. Indian J Med Ethics. 2014 Apr 1;11(2):89-93. doi: 10.20529/IJME.2014.023. PMID: 24727619.

76: Rajkumar RP, Bharadwaj B. Dhat syndrome: evidence for a depressive spectrum subtype. Asian J Psychiatr. 2014 Jun;9:57-60. doi: 10.1016/j.ajp.2014.01.007.

Epub 2014 Jan 30. PMID: 24813038.

77: Rajkumar RP. Substance use disorders in men presenting to a psychosexual clinic. ISRN Addict. 2014 Jan 6;2014:486383. doi: 10.1155/2014/486383. PMID:

25938122; PMCID: PMC4392967.

78: Rajkumar RP. Gender identity disorder and schizophrenia: neurodevelopmental

disorders with common causal mechanisms? Schizophr Res Treatment. 2014;2014:463757. doi: 10.1155/2014/463757. Epub 2014 Dec 4. PMID: 25548672;

PMCID: PMC4274821.

79: Rajkumar RP. Supersensitivity psychosis and its response to asenapine in a patient with delusional disorder. Case Rep Psychiatry. 2014;2014:215732. doi:

10.1155/2014/215732. Epub 2014 Nov 13. PMID: 25478273; PMCID: PMC4247943.

80: Rajkumar RP. Prolactin and psychopathology in schizophrenia: a literature review and reappraisal. Schizophr Res Treatment. 2014;2014:175360. doi:

10.1155/2014/175360. Epub 2014 Mar 27. PMID: 24800074; PMCID: PMC3985293.

81: George M, Amrutheshwar R, Rajkumar RP, Kattimani S, Dkhar SA. Newer antipsychotics and upcoming molecules for schizophrenia. Eur J Clin Pharmacol.

2013 Aug;69(8):1497-509. doi: 10.1007/s00228-013-1498-4. Epub 2013 Apr 2. PMID:


82: Bharadwaj B, Sugaparaneetharan A, Rajkumar RP. Graves' disease presenting with catatonia: a probable case of encephalopathy associated with autoimmune

thyroid disease. Acta Neuropsychiatr. 2012 Dec;24(6):374-9. doi:

10.1111/j.1601-5215.2012.00654.x. PMID: 25287181.

83: Bharadwaj B, Bernard M, Kattimani S, Rajkumar RP. Determinants of success of loading dose diazepam for alcohol withdrawal: A chart review. J Pharmacol

Pharmacother. 2012 Jul;3(3):270-2. doi: 10.4103/0976-500X.99440. PMID: 23129965;

PMCID: PMC3487278.

84: Rajkumar RP. Successful management of difficult-to-treat aggression with low-dose propranolol in a patient with intellectual disability: a case report.

Prim Care Companion CNS Disord. 2012;14(5):PCC.12l01373. doi:

10.4088/PCC.12l01373. Epub 2012 Oct 4. PMID: 23469323; PMCID: PMC3583764.

85: Narayanaswamy JC, Gopinath S, Rajkumar RP, Raman RP, Math SB. Co-occurrence of Intermetamorphosis and Frégoli Syndrome in Schizophrenia: A Case Report. Prim

Care Companion CNS Disord. 2012;14(2):PCC.11l01279. doi: 10.4088/PCC.11l01279.

Epub 2012 Apr 12. PMID: 22943023; PMCID: PMC3425455.

86: Rajkumar RP. Functional hallucinations in schizophrenia responding to adjunctive sodium valproate. Indian J Psychol Med. 2012 Jan;34(1):76-8. doi:

10.4103/0253-7176.96165. PMID: 22661813; PMCID: PMC3361849.

87: Viswanath B, Narayanaswamy JC, Rajkumar RP, Cherian AV, Kandavel T, Math SB, Reddy YC. Impact of depressive and anxiety disorder comorbidity on the clinical

expression of obsessive-compulsive disorder. Compr Psychiatry. 2012

Aug;53(6):775-82. doi: 10.1016/j.comppsych.2011.10.008. Epub 2011 Dec 2. PMID:


88: Harish T, Chawan N, Rajkumar RP, Chaturvedi SK. Bilateral self-enucleation in acute transient psychotic disorder: the influence of sociocultural factors on

psychopathology. Compr Psychiatry. 2012 Jul;53(5):576-8. doi:

10.1016/j.comppsych.2011.07.001. Epub 2011 Aug 23. PMID: 21864835.

89: Thirthalli J, Rajkumar RP. Statistical versus clinical significance in psychiatric research-An overview for beginners. Asian J Psychiatr. 2009

Jun;2(2):74-9. doi: 10.1016/j.ajp.2009.04.004. Epub 2009 May 20. PMID: 23051033.

90: Desai G, Babu GN, Rajkumar RP, Chandra PS. More questions than answers! Clinical dilemmas in psychopharmacology in pregnancy and lactation. Indian J

Psychiatry. 2009 Jan;51(1):26-33. doi: 10.4103/0019-5545.44901. PMID: 19742205;

PMCID: PMC2738416.

91: Sringeri SK, Rajkumar RP, Muralidharan K, Chandrashekar CR, Benegal V. The

association between attention-deficit/hyperactivity disorder and early-onset alcohol dependence: A retrospective study. Indian J Psychiatry. 2008

Oct;50(4):262-5. doi: 10.4103/0019-5545.44748. PMID: 19823611; PMCID:


92: Benegal V, Rajkumar RP, Muralidharan K. Does areca nut use lead to dependence? Drug Alcohol Depend. 2008 Sep 1;97(1-2):114-21. doi:

10.1016/j.drugalcdep.2008.03.016. Epub 2008 May 19. PMID: 18490113.

93: Muralidharan K, Rajkumar RP, Mulla U, Nayak RB, Benegal V. Baclofen in the management of inhalant withdrawal: a case series. Prim Care Companion J Clin

Psychiatry. 2008;10(1):48-51. doi: 10.4088/pcc.v10n0108. PMID: 18311421; PMCID:


94: Rajkumar RP, Reddy YC, Kandavel T. Clinical profile of "schizo-obsessive" disorder: a comparative study. Compr Psychiatry. 2008 May-Jun;49(3):262-8. doi:

10.1016/j.comppsych.2007.09.006. Epub 2007 Dec 20. PMID: 18396185.

95: Math SB, Thoduguli J, Janardhan Reddy YC, Manoj PN, Zutshi A, Rajkumar RP, Adarsh AM. A 5-year course of predominantly obsessive vs. mixed subtypes of

obsessive-compulsive disorder. Indian J Psychiatry. 2007 Oct;49(4):250-5. doi:

10.4103/0019-5545.37664. PMID: 20680136; PMCID: PMC2910347.

96: Muralidharan K, Rajkumar RP, Ananthapadmanabha Rao S, Benegal V. Catatonia as a presenting feature of alcohol withdrawal: a case report. Prim Care

Companion J Clin Psychiatry. 2007;9(6):465. doi: 10.4088/pcc.v09n0611a. PMID:

18185829; PMCID: PMC2139932.

97: Muralidharan K, Rajkumar RP, Rao SA, Benegal V. Topiramate-induced psychosis

in an individual with alcohol dependence: a case report. Prim Care Companion J

Clin Psychiatry. 2007;9(4):317-8. doi: 10.4088/pcc.v09n0411e. PMID: 17934562;

PMCID: PMC2018845.

Positions Held: 
  • Assistant Professor (18.01.2010 – 30.06.2013)
  • Associate Professor (1.7.2013 – 30.06.2016)
  • Additional Professor (1.7.2016 – 30.06.2021)
  • Professor (1.7.2021 till date)
Special Clinics: 

Marital and Psychosexual Clinic

Psychodermatology Clinic

Memory and Neuropsychiatric Clinic