Erythroplasia of Queyrat is an early form of skin cancer found on the penis. The cancer is called squamous cell carcinoma in situ.
The condition is typically found in men who have not had the foreskin of the penis surgically removed (circumcision).
The main symptoms are a red rash and irritation on the tip of the penis.
Erythroplasia of Queyrat is usually treated with creams such as imiquimod or 5-fluorouracil, which are used for several weeks to months. It does not respond to anti-inflammatory creams, such as topical steroids.
This condition is sometimes treated with medicines taken by mouth, including chemotherapy drugs and medicines that change the body's immune response.
More aggressive forms of the disease may require surgery, usually microscopic shaving (Mohs surgery).