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Year : 2021  |  Volume : 9  |  Issue : 4  |  Page : 156-158

The curious case of an erythematous plaque on penis

People’s College of Medical Sciences and Research Center Bhopal, HIG A6, PCMS Campus, Bhopal, Madhya Pradesh, India

Correspondence Address:
Prachi R Srivastava
People’s College of Medical Sciences and Research Center Bhopal, HIG A6, PCMS Campus, Bhopal, Madhya Pradesh
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/dypj.DYPJ_77_21

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Penile psoriasis is a rare entity comprising of only 3% of all the psoriatic cases. However, it is one of the most common non-venereal diseases of the genitalia. Due to the location, sexually transmitted diseases are often suspected as the first diagnosis leading to delay in diagnosis and therapy. This causes quality of life impairment of patients along with severe psychosocial disturbances. We hereby present the case of a young immunocompetent male patient with a non-healing lesion on the glans penis of 4 month duration with raised anti-herpes simplex virus 2 immunoglobulin G (IgG) and IgM titres who was previously misdiagnosed as herpes genitalis owing to the location and serology. A biopsy leads to the correct diagnosis of psoriasis. He was then treated with calcipotriol and clobetasol combination with which the lesions healed in a week. We are presenting this case to raise the index of suspicion of psoriasis in patients with isolated penile lesions, as the presentation here is different with the lesions being non-scaly, compared to the other areas of the body. Another aspect is that maybe this case represents Wolf’s isotopic response in relation with “Zoster Sine Herpete” and psoriasis. This is to our knowledge the first time this phenomenon is being reported with psoriasis..

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