An armpit or underarm rash usually appears as a red, inflamed, bump on the armpit and is often itchy or painful. It may be caused by an allergic reaction to a new deodorant or soap. Wearing clothing that is too tight on the underarm is also one of the causes of armpit rash. In addition to allergic reactions, an armpit rash can also result from a skin fungal infection called psoriasis.
The armpits attract fungi because it is often moist with sweat. Fungi infections on the underarm can cause itching and redness, and can also cause a burning sensation. Anti-fungal creams and ointments can provide relief, but if the infection is severe, antibiotics may have to be taken. However, in most cases, armpit rashes heal on their own, even without any treatment.
Psoriasis is one of the major causes of armpit rash. A person who has this condition will have scaly and inflamed areas on the skin. These patches of scaly skin can also appear on the arms and may sometimes look silvery. Topical hydrocortisones are often prescribed to treat underarm rash and inflammation which is caused by psoriasis.
Underarm shaving is also one of the most common causes of armpit rash. Frequent armpit shaving can irritate the hair follicles, which can lead to an infection. This condition is called folliculitis and can be treated by simply stopping underarm shaving for a few weeks. Sometimes using a hypoallergenic shaving cream can also help. If the condition gets more severe, you should talk to your doctor who may prescribe antibiotics.
There are also other causes of armpit rash which are related to systemic diseases. Armpit rash which is caused by diabetes is more difficult to treat, as this is often caused by an overgrowth of yeast. Aside from armpit rash that is caused by diabetes and other systemic illnesses, prickly heat rash on the underarms is often easy to treat, and usually do not lead to other complications. Certain medications can also lead to skin infections, which can happen in the warmest parts of the body such as the armpits.
When an armpit rash recurs too often, it may be a sign of another serious infection. In cases of severe underarm rashes, consult your doctor in order to get the proper treatment to relive the itch and the pain.