What causes acne on the forehead during pregnancy?

Acne on the forehead during pregnancy, this situation may be after the patient is pregnant, due to changes in hormone levels in the body, resulting in excessive secretion of some sebum from the sebaceous glands of the human body, and if these sebum are not discharged from the skin surface in time, they may accumulate inside the sebaceous gland duct. When the accumulation reaches a certain extent, it may lead to the rupture of the sebaceous gland duct, which eventually triggers a local inflammatory reaction. If the surrounding area has certain conditional pathogens, such as Propionibacterium acnes, or white grape bacteria, etc., this may be secondary to local inflammation, eventually forming a secondary infection, thus forming inflammatory acne. Of course, some people may eat some spicy food, or eat seafood, and sometimes may eat barbecue, etc., may lead to acne on the face.