Rash On Inner Thighs

There’s no “good” place to break out in rashes, but your inner thighs have to be one of the worst. As a sensitive area of the body prone to sweat, heat, and friction, painful or itchy rashes can feel particularly unpleasant on the thighs. Rashes on your thighs can affect your ability to walk, exercise, or focus, and for obvious reasons, it’s not exactly something you can adjust or address in public. Fortunately, there are some easy treatments available, but as a rash can be caused by any of several conditions, you’ll need to diagnose the issue before you can treat it. Here’s a convenient overview of the most common reasons people suffer from inner thigh rashes, how you might be able to treat them yourself, and, in some cases, why it might make sense to see your doctor.

Jock Itch

One of the most common causes of inner thigh rash is fortunately among the most easily treatable – jock itch, a fungal infection that thrives in moist, hot environments and causes a red, scaly rash with itching and burning sensations. What people often don’t realize is that jock itch is actually the same condition as athlete’s foot or ringworm; the different names only apply to where on the body the rash breaks out. This is important for two reasons. First, it means you should be careful to treat it as soon as you start experiencing symptoms, because it can quickly spread elsewhere on your body. But also, it means that several affordable and easy to use antifungal creams and sprays can effectively clear up the problem. Check out our comprehensive guides to jock itch and/or athlete’s foot treatments to see our top choices for treatment and prevention. Also, always remember to keep your groin area clean and dry to avoid recurrence- we recommend daily use of a safe, effective body powder.


Another common source of painful rashes can be folliculitis, an infection of your hair follicles that can cause red rashes, pimple-like bumps, and in severe cases, larger and extremely painful boils. The most common cause of folliculitis is “razor burn” from shaving too closely- if you cut yourself with the razor (even if it’s too small to notice), the bacteria that naturally lives on the surface of your skin can sometimes get inside the skin and cause the infection. If your rash occurs right after you’ve attempted to shave or trim your public/thigh hair, folliculitis may well be the cause. Keep your skin clean and dry and avoid irritating the rash, and it should go away on its own. However, if the rash is getting worse, you may need to consult your physician to see if a prescription ointment is necessary. Some medications (including leading acne medications) can make you more susceptible to infection, so be sure to mention anything you’re taking.


Sometimes, an inner thigh rash isn’t caused by an infection at all, but simply by skin irritation from constant rubbing of the thighs against each other, or against your underwear or other clothing. If the rash seems to only occur where you can feel your thighs rubbing during exercise or other movement, you may want to consider a product that will reduce friction on that skin- luckily, there are several anti-chafing balms and powders that can both soothe already-painful chafed skin and add a protective layer of glide that will prevent further damage.

Contact Dermatitis

It’s always worth considering that a rash might be caused by direct skin contact with something you’re allergic to- something in your clothes, a new bath product, or even a lotion or cream you’ve never applied to that area before. If you have reason to suspect this is the case, try switching your routine or clothes to see if the rash discontinues. If so, see if you can isolate the ingredient/material responsible so you can avoid it going forward. Remember that even if your clothes aren’t new, a change in your laundry detergent or fabric softener might be the culprit.

Sexually Transmitted Diseases

This one is no fun, but if your inner thigh rash presents as a series of painful red bumps and blisters that extend to the genital region, it’s possible that you have a sexually transmitted infection (STI) such as herpes or syphilis. If you have reason to believe you could have been exposed to an STI, it’s extremely important to see your doctor and get tested as soon as possible; easy treatment is often available if you catch the problem early, but untreated STI’s can have serious consequences for your health, and put others at risk for transmission.