Differential Diagnosis for Rash on Penis Head and Burning with Urination
Single Most Likely Diagnosis
- Urinary Tract Infection (UTI): This is a common condition that can cause burning with urination (dysuria) and, in some cases, a rash on the penis head due to irritation or an allergic reaction to the bacteria.
Other Likely Diagnoses
- Herpes Simplex Virus (HSV): HSV can cause painful blisters or rashes on the genital area, including the penis head, and may be accompanied by symptoms like burning during urination.
- Syphilis: The primary stage of syphilis can present with a painless sore (chancre) on the genitals, which could be mistaken for a rash, and may cause discomfort during urination.
- Balanitis: An inflammation of the glans (head) of the penis, often caused by poor hygiene, infections (bacterial, fungal, or viral), or allergic reactions, which can lead to a rash and discomfort.
- Contact Dermatitis: An allergic reaction or irritation from soaps, condoms, or other products can cause a rash on the penis head and may lead to discomfort during urination if the urethral opening is affected.
Do Not Miss Diagnoses
- Gonorrhea: A sexually transmitted infection that can cause severe symptoms, including burning during urination and, less commonly, a rash. It's crucial to diagnose and treat gonorrhea promptly to prevent complications.
- Chlamydia: Similar to gonorrhea, chlamydia is a sexually transmitted infection that can cause dysuria and, in some cases, a rash. Early diagnosis and treatment are essential to prevent long-term health issues.
- Penile Cancer: Although rare, any unusual or persistent rash on the penis should be evaluated for the possibility of penile cancer, especially in uncircumcised men or those with a history of HPV infection.
Rare Diagnoses
- Lichen Sclerosus: A rare condition that creates patchy, white skin that's thinner than normal. It can cause itching, burning, and pain, especially if the skin tears, and may affect the penis head.
- Zoon's Balanitis: A rare, chronic inflammatory condition of the glans penis, characterized by a rash, which is more common in older, uncircumcised men.
- Fixed Drug Eruption: A condition where certain medications cause skin lesions or rashes that recur at the same site each time the drug is taken, which could potentially affect the genital area.