Medically reviewed by Susan Bard, MD An inner thigh rash is a skin irritation that develops on the inner portion of your upper legs or groin area. Warmth, moisture, friction with clothing, and ...

Find out the various causes of groin rash as well as treatment options.

A genital rash is usually a symptom of another condition and can present as bumps, lesions, or irregular patches on the genitals. Using photographs to illustrate some of these underlying ...

The lymph nodes swell as a reaction to an infection or, sometimes, due to an immune system disorder. Learn about some causes of swollen lymph nodes in the groin here.

Inverse pityriasis rosea usually causes a rash on the armpits or groin. It's an atypical type of pityriasis rosea. Learn more here.

Learn more from WebMD about diaper rash, a common problem in babies: overview, prevention, causes and treatment.

What is lupus in dogs, and what causes it? How can you treat lupus? Click here to read about the clinical signs, treatment, and more.

The Takeaway Jock itch, or ringworm of the groin, is a common, contagious fungal infection affecting the groin and thigh area that often causes discomfort, itching, and a rash.

Sometimes, however, an armpit rash is severe enough to require a trip to the doctor. Learn symptoms of an armpit rash, what causes it, how it’s diagnosed, and treatment options.

Jock itch isn't the only reason men develop a rash in their groin area. Here’s how to find what’s causing your itchy crotch and itchy balls, plus treatments.