Rashes in the groin or genital area often result in reddening of the skin and may be accompanied by pain, itchiness or bumps, Healthline states. Rashes may the result of clothing rubbing against the skin or an infection, parasite or allergic reaction, notes WebMD.
A fungal infection known as 'jock itch' may cause blisters and a scaly appearance. Yeast infections in women may be a side effect of antibiotics; symptoms include a white discharge from the area, swelling and a red skin color. Diaper rash affects babies, causing a red and scaly appearance of the skin with blisters or bumps. Molluscum contagiosum, a viral infection, creates hard and round bumps of the affected area.
Body lice can be found on clothing and skin, and typically create an itchy rash in the affected area, while pubic lice are smaller than body lice and transmitted sexually. Scabies also cause an itchy rash, and accompanied by significantly more intense itching.
Contact dermatitis due to contact with soaps, solvents or detergents also causes skin irritation or rashes to form from an allergic reaction.
Persons with diabetes, peripheral arterial disease or an impaired immune system are at an increased risk for infection stemming from rashes in the groin and genital area.