After copulation the males die. After laying her eggs, the female also dies.
Pinworms infections can be asymptomatic or result in mild gastrointestinal upsets.
A common symptom associated with pinworm infections is perianal itching. Scratching of the perianal skin to relieve the itching can lead to bacterial infections that result in more itching, etc. This cycle can result in a situation where the infected person becomes very uncomfortable. Children infected with pinworms often undergo behavioral changes, including restlessness, irritability, and insomnia. In women, the adult pinworms can enter the vagina and cause additional irritation.