Hi louise111. A white patch with no other associated symptoms in penile area goes with major diagnosis as
vitiligo involving genital area. This condition is associated with chalky white patches with no itching or any
other complaints. These are due to autoimmune process which destroys melanocytes; as a result hypo
pigmentation occurs. As such there is no specific treatment for underlying cause, but white patches can be
treated by various methods like exposure to sunlight, long-term exposure to UV rays, applying corticosteroids,
& immunomodulators etc,. There is no need to panic. I advice you to have consultation with dermatologist.
Hope my advice helpful to you. Take care.