Hard pack bulges on the forehead require careful observation of the appearance of the hard pack, which commonly is usually located under the skin. It is possible that the patient suffered a trauma, which was not cared for at the time and had no corresponding symptoms, and later developed a bulge, called a hematoma. In addition, harder pouches may also be sebaceous cysts, and those with fluctuating sensations are usually boils. Whether a hard pack will leave a scar (the technical term for a scar) after treatment also needs to be judged according to the severity and type of the disease.1. Hematoma: Local cold compresses are applied within 48 hours to make the blood vessels constrict and improve the painful sensation of the hematoma. after 48 hours, the compresses are changed to hot compresses to play a role in promoting the absorption of the hematoma. If the hematoma is large with obvious fluctuation, local puncture and pressure bandage are required. Generally, it can be absorbed in a few days without leaving a scar. 2. Sebaceous cysts: surgical excision is the main focus, and if infection occurs, surgery should be performed after the inflammation is eliminated. The surgery should remove the cyst site completely, otherwise the residual cyst wall tissue will lead to the recurrence of cysts. After complete removal of the cyst, sebaceous cysts usually do not leave a scar. If the cyst is repeatedly ruptured and infected then scarring may be formed; 3. Boils: most of them can break down and heal on their own without additional treatment. The red and swollen stage can be treated with hot compresses and infrared rays to promote the local redness and swelling to subside, and also with topical medications such as Jinhuang San or ichthyolite ointment. When pus is visible at the apex of the boil, or when there is a local fluctuating sensation, the pus plug can be removed with a needle tip after aseptic treatment. After the pus flows out, topical furacilin can be applied for disinfection. If the patient has symptoms of systemic infection such as fever and headache, antibacterial drugs such as penicillin and cephalosporin can be used for treatment. After the pus from the boil is drained, it will heal in a few days, but there is a possibility of scarring. The above are some of the more common clinical diseases. If a patient has an unexplained hard bump on the forehead, it is recommended to seek medical treatment in a timely manner to avoid delaying the condition.