Is an itchy anus a sign of pinworms?

Aug 24, 2022 Source: Cainiu Health
Disease description:

Recently, I suddenly noticed intense itching around my anus. A friend suggested it might be due to intestinal roundworms. Could anal itching be a sign of having worms?

Doctor's answer (1)
Dr. Cheng Yicheng
Itchy anus is not necessarily a symptom caused by roundworms in the body. Itchiness around the anus may result from external hemorrhoids due to frequent consumption of spicy and greasy foods leading to internal heat, or it could be perianal eczema caused by the skin around the anus being frequently affected by fungi or other factors in the external environment. If you experience an itchy anus, it is recommended to maintain good hygiene around the anal area.