Painful hard bumps on the labia may be folliculitis, hard chancre, and so on.
1. Folliculitis: due to the vaginal secretion stimulation of vulvar hair follicles, if you usually do not pay attention to hygiene, resulting in local hair follicle inflammation, the formation of red pimples, pus herpes, etc., manifested as hard bumps on the labia. It is usually caused by staphylococcus aureus infection, and can be treated by applying local antibiotics, such as fusidic acid cream, etc., and incision and drainage treatment if necessary.
2. Hard chancre: it is the first symptom after syphilis spirochete infection, it is a very small red papule at the beginning, gradually increase in size, clear boundary, hard as cartilage, and then form a rounded ulcer surface with a little secretion, there is no special symptom in general. After diagnosis, you need to use penicillin drugs in time.
There are other reasons for hard pimples on the labia, and you need to go to the hospital, make a clear diagnosis, and actively treat it, so as not to delay the condition.