Itching of the penis is a common condition. This condition can be caused by a mild infection. However, there are times when itchy penis is also an indication of sexually transmitted diseases. Itchy penis can also be caused by various other things, such as fungal infections, scabies, underwear that is too tight, allergic reactions, to the existence of friction on the skin. Generally, itching of the penis is treated according to the underlying cause. Itching on the penis can be treated with over-the-counter medicines. But if the itching doesn't go away, there may be other causes that need a doctor's examination. Causes of Itching Penis Handling of itching on the penis is done according to the cause of the condition. The following are some of the most common causes of itching in the penis, including: Fungal infections or candidiasis Fungal infections are generally harmless and can be treated using antifungal drugs. Fungal infections often occur on the head of the penis