Itchy armpits may be eczema in the armpit, or it may be sweat glands or folliculitis in the armpit. Folliculitis is not particularly serious and early manifestations are usually mild itching or severe itching. If the itching expands further, there may be an increase in local inflammation, some of which can stimulate fungal infection. After fungal infection of the armpit, there may be a certain circle-like flaking reaction at the front and back of the armpit. So at this point, in addition to the usual anti-allergy treatment, it is necessary to check for fungus, and if there is fungus, topical antifungal medication is needed, and usually Dacronin cream can be used.