Razor bumps can occur on or near the genitals after shaving. Psoriasis - Bright red, shiny patches on the penis and/or genitals. It typically is not scaly or flaking when it occurs in the genital region due to the area being well-covered, so it retains more moisture than other parts of the body.
A: The main cause of a purple tinge in fingernails is low oxygen levels in the blood. This can be caused by poor circulation, as well as habits that inhibit oxygen absorption such as smoking. A single fingernail may also become purple if it has been injured, indicating a bruise underneath the nail.
Dark Skin â If you have dark skin (African American or black people) it is not uncommon to have tan or dark lines running down your fingernails or toenails. Thought the possibility for cancer should not be ignored. Fungus â A fungal nail infection can cause discoloration of fingernails and toenails. Toenail fungus can cause the nail to appear dark even black. Often though there will be other shades of yellow and green associated with fungus.