Why Do I Have A Rash In My Bum

Adults may experience butt rashes caused by any of the following:

• Heat rash: This itchy, red rash often appears as blisters or red bumps during hot weather.
• Ringworm: More commonly known as jock itch, ringworm is a fungal infection that causes a red, ring-shaped rash in the groin and butt area.
• Contact dermatitis: This itchy rash is inflammation of the skin caused by direct contact with an irritant.

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Intertrigo is a type of dermatitis caused by the skin rubbing against itself (such as the skin in a skinfold), leading to moisture and friction. Symptoms include inflammation, redness, and scaling. This may occur near the anus or between the buttocks and backs of thighs. Once the skin is irritated, a bacterial or fungal infection could occur.

Intertrigo is a rash that usually affects the folds of the skin, where the skin rubs together or where it is often moist. The rash is caused by fungus or bacteria.

(It can even find its way to your lower back, adds Dr. Robinson.) When the virus flares up—due to stress or illnesses that weaken your immune system—it can come to the surface of the skin, causing a rash, explains Dr. Zeichner.

Watch for itchiness on your butt, closer to your perianal area. You might see satellite pustules, or small pus-filled bumps situated slightly away from the main rash area.