An underarm rash is often unpleasant. There might be pain, burning and itching of the affected skin, which is already tender. The rash can also be embarrassing in certain situations. It is important to diagnose the source of the rash and then proceed to treating it.

If you break out in a rash during or after exercise, you may be suffering from heat rash -- also known as prickly heat or milaria – or cholinergic urticaria, which is a type of hives caused by heat. There are differences in what causes each of these conditions, but neither is usually serious.

Skin rashes are relatively common and can occur due to skin disorders, allergic reactions or exposure to chemicals and rough fabrics. If a skin rash does not go away with over-the-counter treatment methods, it should be evaluated by a physician to determine its cause.

Salicylic acid is a beta-hydroxy acid that penetrates deep into your pores. It is frequently used in acne and anti-aging products because it can break down lipids while smoothing the skin. Salicylic acid can remove dead skin and may reduce hyper-pigmentation and fine lines over time.

Salicylic acid and retinol are medications that can help clear acne. According to Elle magazine, dermatologist Jenny Kim says that while salicylic acid works to kill pimple-causing bacteria, retinol removes the upper layers of skin to get rid of pimples and scars and smooth your overall complexion.

You can measure the severity of road rash by degree, much like you measure burns. First-degree road rash presents with skin redness and needs no treatment. Second-degree road rash results when the outer layer of skin breaks but can heal itself with minimal scarring.

Contact with honey is sometimes avoided due to its sweet, sticky nature, but for centuries honey has been used for its healing properties on wounds and rashes.

Ringworm is a fungal infection on the skin and may infect different areas of the body. If the fungi infect the area around the groin, referred to as jock itch or tinea cruris, an individual may experience symptoms such as red, scaly patches of skin and itching on the upper thigh, groin and lower abdomen.

Goose bumps occur when tiny muscles within your hair follicles contract, usually in response to cold, fear or another intense emotion. Many people experience a persistent or recurring skin rash that resembles goose bumps, due to involvement of the hair follicles.

Chlorine and bromine are toxic chemicals used for many purposes. One of the most common uses is to disinfect water. Chlorine and bromine are highly reactive and form acids in water. These acids neutralize harmful microscopic organisms.

Swelling, burning and itching can be very painful if they are all present in your fingers, not only because of the symptoms themselves but because of how often your digits are used. Additionally, the skin on your fingers tends to be more sensitive, which can heighten your pain and discomfort.

Skin reactions to laundry detergent are quite common. Irritants or allergens in laundry detergent contact the skin through the large amount of surface area covered by clothing.