What is the cause of a small bump on the corona of the genitalia?

Patient's question:

Recently I only realized it's not painful or itchy.

Doctor's answer:

In your case, it might be localized eczema, which is a common allergic, non-infectious, and superficial epidermal inflammation. It is an inflammatory skin disease affecting the epidermis and the superficial dermis, caused by various internal and external factors. Boiled Sophora root water can be used for fumigation and washing, which may be effective. I believe everyone knows that urinary tract infections can cause significant harm to patients, so it's important to seek treatment as soon as possible. In daily life, pay attention to dietary issues and avoid foods. Maintain a balanced diet. Additionally, regular follow-up visits can be scheduled when necessary.

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