Flesh grains on forehead may be caused by sebaceous cysts, acne, filiform warts and other diseases, some of which can be removed through surgery, while some are not recommended to be removed through surgery, as follows: 1. Sebaceous cysts: Sebaceous cysts are formed when sebum accumulates in hair follicles due to poor excretion of sebum. Surgery is recommended to remove the walls of the cysts together in order to prevent recurrence. 2. Acne: Acne is usually caused by hormone levels and increased oil secretion. Mild cases can be treated with topical retinoic acid cream or fusidic acid cream, while severe cases can be treated with oral retinoic acid drugs, and usually do not require surgical treatment. 3. Filiform warts: Filiform warts are formed due to viral infections, in the treatment of which 4-fluorouracil, imiquimod and other ointments are usually used externally, while cryotherapy, electrocautery treatment or laser treatment is used to remove warts. For those with fewer or larger warts, they can be removed by surgical treatment, but scarring needs to be prevented. For the forehead long meat grain patients, it is recommended to go to the regular hospital in a timely manner to clarify the diagnosis, under the guidance of a professional doctor to carry out targeted treatment.