There are many causes of perianal hard lumps, such as external hemorrhoids, perianal abscesses, cysts and so on. 1. External hemorrhoids: thrombosed external hemorrhoids can cause the phenomenon of striated hard lumps in the perianal area, the overall texture is hard, and there will also be the phenomenon of pain. 2. Perianal abscess: Perianal abscess can also lead to perianal stripes and hard lumps, accompanied by redness, swelling, pain, fluctuating sensation. 3. Cysts: anal subcutaneous cysts, may also cause perianal striated hard lumps phenomenon, mainly due to secondary inflammation affecting the sebaceous gland excretion, resulting in obstruction, leading to localized cystic lesions. There are many reasons for the perianal hard lumps, it is recommended that patients go to the hospital in a timely manner to improve the examination, to clarify the cause of the disease, follow the doctor’s instructions to give standardized treatment, do not ignore the symptoms, in order to avoid delaying the condition.