The lower part of the redness and hardness is considered to be folliculitis, or acne, a skin disease caused by bacterial infection. Treatment requires active anti-infection treatment, you can take oral minocycline hydrochloride or doxycycline, the general course of treatment for at least ten days. At the same time, local anti-inflammatory creams can be applied topically, such as fusidic acid cream, clindamycin gel, compound polymyxin B cream and so on. If the extent of redness and hard lumps is large, you can also apply topical oil toner, which has the effect of reducing swelling and dispersing nodules. In addition to medications, it is also important to avoid spicy and stimulating foods, eat less sweets, and do not squeeze and pick the rash with your hands to avoid the spread of inflammation.