Bumps in the eyebrows may be caused by folliculitis, acne and other reasons. 1. Folliculitis: there are abundant hair follicles distributed under the eyebrow skin, if the local skin is infected by Staphylococcus aureus, or often stay up late to cause oil secretion to block the pores, thus triggering folliculitis, the root of the hair follicles will appear red, swollen, painful and other phenomena. It can be manifested as a pimple in the eyebrow. 2. Acne: This disease is often caused by abnormal keratinization of cells around the hair follicle, local infection, excessive sebum secretion and hormone level disorders, is a chronic inflammatory disease that occurs in the hair follicles sebaceous glands, and its typical symptom is the appearance of the skin in the affected area of the whiteheads, blackheads, pimples, pimples, etc., i.e., pimples. If you have pimples in your eyebrows, you should go to a regular hospital in time to find out the cause of the disease and choose a suitable method of treatment under the guidance of a professional doctor.