A raised hard bump on the forehead may be acne, sebaceous cysts, etc. Depending on the cause of the problem, topical medication or surgical removal may be used. 1. Acne: often caused by untimely or mistreatment of acne, it is a superficial hard nodule at the skin, immovable and often accompanied by pain. It can be treated with topical benzoyl peroxide and retinoids as prescribed by the doctor, as well as oral retinoids and hormones under the doctor’s guidance, and can also be improved with laser therapy and photodynamic therapy. 2. Sebaceous cysts: manifested as a subcutaneous round swelling, its skin surface can be seen small openings, if broken can be seen tofu dregs-like material outflow. Generally not self-healing, if there is no special symptoms usually do not need to deal with; if it affects aesthetics, etc., can be surgically excised; if the local secondary bacterial infections, can be the first topical or oral antibiotic anti-infection treatment, and then surgical treatment. Hard packs on the forehead may also be caused by other diseases, it is recommended that patients go to the hospital in a timely manner, after a clear diagnosis, under the guidance of the doctor to take targeted treatment.