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.
Causes of Yellow Nails. It isn't just nail polish that can make nails different colors. Nail discoloration can be an indicator of underlying health problems or simply a result of the aging process. Nails can turn white, black, brown, blue, red and purple, but often the discoloration is yellow. Yellow nail discoloration has several causes.