Hard lumps in the perianal lining without pain or itching may be caused by hemorrhoids, perianal cysts, perianal malignant tumors and other causes. 1. hemorrhoids: external hemorrhoids are perianal masses formed by varicose vein masses, external hemorrhoids do not cause perianal pain and itching symptoms when not combined with infection, thrombosis and other conditions. 2. perianal cysts: due to perianal sebaceous gland excretion obstruction caused by storage cysts, can be formed in the perianal lining hard lumps, in the absence of infection, generally does not cause pain and itching symptoms. 3. Perianal malignant tumor: malignant lesions occur in perianal tissue cells, resulting in the formation of malignant tumors, which can form hard lumps in the perianal area, and the tumors may not be accompanied by pain or cause perianal itching in the early stage. Hard lumps in the perianal area without pain or itching may also be caused by warts, perianal scarring, so patients with this symptom should go to the hospital in a timely manner to improve the examination and give targeted treatment as soon as possible after the cause of the disease is clear, to avoid delaying the condition.