There's a red one on the tip of the penis. What's going on?

Balanus has a piece of red may be caused by pigmented nevus, balanitis, syphilis and other reasons.

1. Pigmented nevus

pigmented nevus is a pigmented lesion composed of nevus cells. If it grows in the glans, the patient shows dark brown or red plaques locally on the glans without other conscious symptoms.

2. Balanitis balanitis

is an inflammatory reaction that occurs in the glans tissue. Inflammatory factors can stimulate the glans local tissue to cause erosion and ulcer. The external manifestation is a red plaque on the glans.

3.

Syphilis is an infectious disease caused by Treponema pallidum infection. Secondary syphilis can cause skin mucosal lesions. Patients with red brown papules on the glans surface will appear. The naked eye also looks like a red plaque.