White scabs and hard lumps on cats’ skin are symptoms of cat ringworm, which is a common skin disease among pets. It is recommended that owners buy: salt water, pet petitfen spray or fungal drugs, Mona Lisa rings, and use them first Wet the hard scab area with salt water and clean it, then spray Pitfen on it, 2-3 times a day. During this period, the cat should wear a Mona Lisa collar to prevent the cat from licking the wound.