Pimples on temples may be caused by acne, folliculitis, sebaceous cysts and other diseases. 1. Acne: The causes of this disease include abnormal androgen levels, large amounts of sebum secretion, abnormal keratinization of cells around the hair follicles, inflammatory reactions, etc. It can be aggravated by heredity, psychological stress, and immune system decline, etc. It occurs on the face and chest, etc., and is mainly characterized by pustules and pimples, so the patient will have the situation of pimples on the temples. 2. Folliculitis: this disease is caused by bacterial infection in the case of hair follicles or skin damage, such as Staphylococcus aureus, Staphylococcus epidermidis, Streptococcus, etc., the common parts of the face, scalp, buttocks, etc., which can be manifested as pimples on the temples. 3. Sebaceous cysts: Sebaceous cysts are formed when the sebaceous glands of the hair follicles are blocked, leading to accumulation of sebum in the hair follicles, and they can be found in any area where sebaceous glands are distributed, such as the head, face, and back, etc. Therefore, pimples on temples may be caused by sebaceous cysts. It is recommended that patients with acne on the temples go to the hospital to clarify the exact cause of the problem.