Pinworms are extremely common, affecting all ages and people on all social and economic levels. An estimated 10 percent of the general population will experience pinworm infection at some time. The female worms lay their eggs around the anus at night. Symptoms include anal itching, sleeplessness, irritability, and anal irritation due to scratching. Pinworms may also be present without symptoms.
Pinworms are common in school-aged children.
Ringworm can affect skin and nails anywhere on the body, even on the scalp. Symptoms include a rash that is often itchy and flaky. Ringworm on the scalp may leave a flaky patch of baldness. On other areas of the skin, ringworm causes a reddish, ringlike rash that may itch or burn. The area may be dry and scaly or it may be moist or crusted.