Small bumps in the groin may be caused by scabies, lymphatic inflammation, folliculitis and so on, the treatment is different, can be treated by oral medication and so on. 1. Scabies: Scabies is a contagious skin disease caused by scabies mites parasitized on the skin, and it occurs in the groin and other parts of the skin that are thin and tender, and can be treated with topical sulfur ointment. 2. Lymphatic inflammation: refers to the germs such as Staphylococcus aureus, etc., from the skin, mucous membrane breaks or other infected foci invade the lymphatic system, resulting in acute inflammation of lymphatic vessels and lymph nodes. Antibiotic drugs such as Roxithromycin can be taken orally. 3. Folliculitis: may be due to the groin sweat secretion more, the skin is in a moist state leading to infection triggered by folliculitis, can be applied locally mupirocin ointment, erythromycin ointment and other drugs. All of the above drugs need to be used under the guidance of a physician, if you find a small bump in the groin, it is recommended to consult a doctor in a timely manner, after a clear diagnosis of symptomatic treatment.