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What causes a red patch on the penis that worsens after sex?

This Premium Q&A, reviewed and published, features a real conversation between an iCliniq user and a physician.

Patient's Query

Hello doctor,

I have a red patch on my penis head that will not go away and gets even more red after sex. Please help.

Thank you.

Hi,

Welcome to icliniq.com.

It appears to be a form of balanitis known as Zoon’s balanitis or plasma cell balanitis. This condition is a type of chronic inflammation that affects the glans penis, primarily in uncircumcised men. While the exact cause remains unclear, it is often linked to chronic irritation, allergies, or an underlying inflammatory reaction. Factors such as poor hygiene, excessive moisture, or prolonged exposure to irritants like soaps, detergents, or latex may contribute to its development.

The condition typically presents with red, shiny, well-defined patches on the glans, sometimes accompanied by mild soreness, burning, or discomfort. However, since you did not mention any specific symptoms apart from the diagnosis, it is important to assess whether you are experiencing itching, pain, discharge, or other associated issues.

Diagnosis is often based on clinical examination, but in some cases, a biopsy may be required to confirm the condition and rule out other causes, such as infections or precancerous lesions. Treatment may involve topical steroids, antifungal creams, or good hygiene practices. In persistent cases, circumcision may be considered.

I hope this helps.

Kindly revert in case of further queries.

Thank you.

The Probable causes

The probable cause is unknown but irritants aggravate.

Investigations to be done

Do biopsy for histopathology to rule out other differentials.

Differential diagnosis

The differential diagnosis are candidial balanitis, erythroplasia of queret.

Probable diagnosis

The probable diagnosis is Zoon or plasma cell balanitis.

Treatment plan

Use Tacrolimus 0.03 % and apply twice daily for three weeks. Use Emollients like Alovera daily. Avoid harsh soaps.

Preventive measures

Clean regularly and avoid irritants.

Regarding follow up

Have a follow-up after three weeks.

Patient's Query

Hi doctor,

Thank you for the reply.

Where can I get tacrolimus?

Thank you.

Hi,

Welcome back to icliniq.com.

Tacrolimus is the salt name. The brand name is different in different countries by various companies. The chemist will give you the brand of your liking if you tell them the salt name (Tacrolimus 0.03 % ointment).

I hope this helps.

Kindly revert in case of further queries.

Thank you.

Medically reviewed byDr. Divya Banu M

Published At July 6, 2020
Reviewed AtFebruary 10, 2025

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