Penile breakouts that do not crust may be caused by chancre, penile cancer, AIDS, etc. and require further differential diagnosis by a doctor. 1. Hard chancre: Hard chancre is a skin and mucous membrane damage that occurs after syphilis infection, often manifested as ulcers on the penis, which, if left untreated, may lead to weeks of non-scabbing. 2. Penile cancer: red patches and papules are visible on the head of the penis, the lumps are central ulcers with irregular edges and cauliflower-like tumors, and the ulcers do not scab easily. 3. AIDS: the patient’s immune function is reduced, which can also lead to penile breakage not easy to scab. It is recommended that penile breakage does not scab in time to go to the hospital, clear the cause of the disease, under the guidance of the doctor for standardized treatment, so as not to delay the condition.