Black streaks on the foreskin of the penis may be related to vascular distribution, hyperpigmentation, trauma, etc. The treatments involved include observation, use of medication, such as erythromycin ointment, and other modalities.
1. Vascular distribution: It can be considered as vascular distribution or veins, which is manifested by the appearance of black stripes on the top of the penis protruding from the surface of the skin, and the stripes will be more obvious especially after the penis is erected. The appearance of blood vessels on the penis is a normal phenomenon and does not require special treatment.
2. Hyperpigmentation: If the penis has had some kind of disease, such as penile glans, penile eczema and other diseases, due to local skin stimulation, in the process of recovery, there will be hyperpigmentation, usually without special treatment, can be observed first, with the passage of time, the hyperpigmentation will gradually become lighter.
3. Trauma: If you do not pay attention to the protection of the penis, penis trauma, may be accompanied by local redness, swelling and pain, you can apply mupirocin ointment, erythromycin ointment and other drugs to avoid infection.
If there is discomfort, the patient is best to do further examination, and follow the doctor’s instructions for treatment.