There are red spots on the testicle. Now it's black. What's going on?

Balanus eczema

is an inflammation that occurs in the superficial dermis and epidermis, stimulated by inflammation, can lead to local congestion, exudation, manifested as erythema, papules, pustules, etc.; the continued existence of lesions may lead to pigmentation, so that erythema blackens.

2, balanus inflammation Balanus

inflammation is an inflammatory lesion that occurs in the glans, stimulated by inflammation, can lead to glans skin mucosa congestion, causing edema, erythema and other symptoms; the continued existence of inflammation will also affect local metabolism, leading to pigment accumulation, so that skin lesions blacken.

3, contact dermatitis

Some patients may be allergic to certain components of underwear, causing contact dermatitis, can cause inflammatory reactions at the contact site, erythema, edema, papules and other symptoms; as the skin lesions continue to worsen, it will also cause erosion, exudation, and even necrosis, so that the lesion site gradually blackens.