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.
Psoriasis can cause the thick fingernails symptomatic of fungal nail infections, and both can cause red skin rashes that itch. When tinea grows on your skin, it can cause a scaly, red skin rash that clears in the middle, called ringworm (pictured). Fungal infections of the skin and nails can be hard to treat.