Your underarms are a dark, moist environment. That makes them a perfect breeding ground for bacteria. Some of these microbes eat away at sweat and produce odor. This is why you reach for deodorant.
But here is the thing. Sometimes the microbes and the deodorant work against you. The result is a rash.
Rashes look different on everyone. Some show up as raised, blotchy patches of dry skin. Others appear as itchy red bumps or pimples. Some hurt. Others itch like crazy. Some cause no pain or itching at all.
Here is the good news. An underarm rash is rarely a sign of poor hygiene. In fact, it often happens because of the product you use to stay odor-free and hair-free.
Shaving Issues and Razor Burn
Your underarms are ticklish for a reason. The skin there is very sensitive. It is okay to shave. You just need to be careful. Shaving can cause irritation. Razors nick or cut the skin. This causes inflammation. Then deodorant or bacteria further irritate that broken skin.
It is fairly simple to avoid a rash or infection caused by shaving. Use shaving cream for a smooth glide. Make slow, short strokes. Do not drag the razor. If you damage the skin, it will react.
If you shave at night, wait until morning to apply deodorant. This gives your skin a chance to settle. It avoids further irritation from chemicals on fresh micro-cuts.
Heat Rash and Blocked Ducts
Heat rash happens when sweat ducts get blocked. Perspiration builds up beneath the skin. This causes bumpy, sometimes painful inflammation. It is not always clear why sweat ducts block. Certain factors contribute, though. Bacteria, tight-fitting clothing, medications, and certain fabrics can all play a role.
To prevent underarm rashes from heat, you need to understand the cause. One way to avoid heat rash is to simply not go outside in hot, humid weather. If you have to be outside, do not overexert yourself. Wear loose-fitting clothing made of porous fabric. Let the skin breathe.
Also, do not use powders, creams, or ointments on the skin. They can clog pores. They interfere with perspiration. Trapped sweat is the enemy here.
Friction and Yeast Infections
Friction causes skin irritation in the underarms. This is an area where skin continually rubs against fabric or other skin. Friction, combined with heat and moisture, breaks down the epidermis. This leads to inflammation.
While this is uncomfortable on its own, it gets complicated when bacteria or fungus colonize among the broken skin. They infect it. One specific type of infection that may develop this way is candidiasis. Also known as a yeast infection.
The preventive measures for friction rashes are the same as for heat rash. Keep your underarms dry. Wear light, loose-fitting clothing. Cotton is usually best.
Contact Dermatitis and Allergens
Contact dermatitis is a very common cause of skin irritation on the body, including the underarms. It works just like it sounds. If something touches your skin that irritates it or causes a reaction, a rash can develop.
If you suspect that skin care products or household chemicals are causing your rash, the best way to avoid contact dermatitis is to identify the offending product. Discontinue its use.
If your symptoms do not improve, or if you are unable to identify what is causing the rash, see your physician. He or she can test for a specific allergy. This saves you from guessing games.
Where to Start Troubleshooting
Determining the culprit may require some trial and error. It is frustrating. But it is best to start with your deodorant. Other items that may cause underarm rash include laundry detergent, soap, shampoo, and lotions. Change one thing at a time. Watch how your skin reacts.
Immediate Relief Options
Many rashes disappear on their own in a few weeks. A few weeks can seem like an eternity if your rash is itchy or painful. However, there are ways to get immediate relief.
If your rash is not severe or infected, you probably just need to soothe irritation at the site. Calamine lotion is the most common topical treatment for rashes. You can also apply a hydrocortisone cream. Taking an antihistamine can help too. Pampering yourself by soaking in an oatmeal bath is a great way to soothe skin and relieve itching. If your rash is painful, taking ibuprofen or aspirin should ease pain and inflammation.
No Nails Allowed
While scratching an itchy rash can provide momentary relief, it can also further irritate your skin. This may cause an infection or scarring. Do not do it.
Instead of scratching, try placing a damp cloth over the rash. This will provide some relief. It can be repeated as often as necessary.
It is messy down there. But it is manageable. You just have to listen to your skin.
