Flesh bumps with itching under the armpits can be considered as suppurative sweatitis and folliculitis. Overall, the treatment includes topical medication, oral medication and so on. 1. Purulent Sweatitis: This disease is a chronic purulent inflammation of the parietal sweat glands, which is mainly manifested as hard subcutaneous nodules, self-conscious pain, pus breaks down to the surface, accompanied by itching sensation; there are mostly Staphylococcus aureus, Streptococcus pyogenes, and other gram-negative bacterial infections; For the treatment of this disease, patients can use topical antibiotic cream (such as mupirocin cream, etc.), and in severe cases, topical glucocorticoid cream (dexamethasone, etc., which needs to be used in strict compliance with the doctor’s instructions); patients can take oral antibiotics (such as minocycline) that are sensitive to the bacteria, and glucocorticosteroids can be used if necessary (prednisone tablets, etc.). 2. Folliculitis: If the pimples are red papules centered on hair follicles, accompanied by itching and other symptoms, it can be considered as folliculitis; this disease is mostly caused by Staphylococcus aureus and other pathogens infecting the hair follicles, and it can also be caused by fungal infections; in addition, trauma to the skin, pulling out the hair of the armpits, wearing tight-fitting clothes, rubbing the skin, excessive sweating, acne or eczema secondary infections, etc., are also easy to induce this disease. For the treatment of this disease, bacterial infections can be treated with topical antibiotic cream (mupirocin cream, etc.) or oral antibiotics (cefuroxime, etc.), and fungal infections can be treated with topical antifungal cream (ketoconazole cream, etc.) or oral antifungal drugs such as itraconazole. It is recommended that the patient consult a doctor in time, conduct relevant examinations, clarify the cause of the disease, and then follow the doctor’s instructions to receive treatment.