Add to Lightbox
Acne keloidalis nuchae on the back of the head and neck. This condition occurs when hairs grow into the skin, become inflamed, and form scar tissue.
Dr. Ken Greer/Visuals Unlimited, Inc.
all images © Visuals Unlimited
Visuals Unlimited, Inc. specializes in, microscopy, healthcare, medical, wildlife, underwater, agriculture, and science stock photography.