Underarm boils and bumps come up for a number of reasons. While these may be harmless, these boils can be annoying. While the boils have a tendency to get in the way while shaving under one's arms, one has to bear in mind that it is shaving that might have led to these boils. In this case, the problem lies in shaving such that it is too close to the skin. While one requires a close shave, this can aggravate your skin leading to these bumps or boils under your arms. Another possibility is that your deodorant might have led the skin on your armpits to react. It could be on account of a newly introduced deodorant that does not agree with your underarm skin. Another possibility is that the boils in this place are caused by soap or detergent. In some cases, harsh soap reacts with your underarm skin to give rise to these bothersome boils. The reason behind these boils is typically inflamed hair follicles. This has to do with the fact that one will find a lot of sweat glands in one's armpit. Usually, the term given to such a condition where boils crop up would be irritant contact dermatitis. To explain further, irritant contact dermatitis is said to be the condition where skin damage occurs on account of contact with any given material that proves to be harmful. This is particularly true when the skin comes in contact with the substance for a prolonged period of time. Unlike allergic contact dermatitis, in this case of skin irritation there is nothing attributable to the immune system.
When it comes to home remedies for boils located under one's arms, one's best chance is to avoid the irritant that led to the underarm boils in the first place. For instance, if the boil culprit is shaving, you might have to find alternative methods of hair removal. In the meanwhile, it might be best to leave the underarm boil alone for a while. For instance, waxing might only aggravate the boil further and lead to a rash. One could also try using milder forms of soap, by means of which your whole body could benefit. These soaps will not only help your underarms, but your skin on the whole should respond better. Since these are easy on the hands, these too should look better. The boils might reduce with heat application; use a warm washcloth for this purpose.
answered by G M