A small bump in the nose may be folliculitis, follicular acne, herpes viral infection, etc., need to consult a doctor to confirm the diagnosis and treat the cause. 1. Folliculitis, may be due to localized hair follicle infection forming herpes, the patient may have localized exudate outflow and painful when pressed. 2. Follicular acne, nasal acne, such as rosacea, patients will have herpes, nodule formation, the duration of the disease is long, will damage the skin mucosa. 3. Herpes zoster virus infection, patients will develop localized blisters or papules, localized pain, may be accompanied by fever and other symptoms. If you find a small bump in the nose, you should actively go to the hospital, and be examined by a specialist for a clear diagnosis.