What causes itchy underarm pimples?

Itchy underarm pimples can be the result of contact dermatitis, folliculitis, and eczema. Pimples here mostly refer to raised skin lesions on the surface of the skin, such as pimples and papules.
1. Contact dermatitis: Patients may have an allergic reaction after coming into contact with a substance to which they are allergic or irritated. It mainly occurs in the contact area of the armpits, where erythema, pimples, papules, and itching sensation and other uncomfortable symptoms appear. In severe cases, blisters and blisters may appear, and there may be vesicles after the latter breaks down.
2. Folliculitis: the skin follicles of the patient’s armpit are infected by bacteria, fungi and other invasive infections, causing follicular inflammation, which can appear in the patient’s armpit raised red papules, some of which may have pus, and accompanied by itching, pain and other uncomfortable symptoms.
3. Eczema: mainly caused by a variety of internal and external factors, patients with metabolic skin diseases, when eczema occurs in the armpit, may appear in the armpit of red spots, papules, oozing, severe blisters, fusion into a piece, can be accompanied by itching and other symptoms.
When acne-like lesions appear in the armpits with itchy symptoms, it is recommended that patients go to the hospital in time for examination and diagnosis, and choose the appropriate treatment under the guidance of the doctor.