Whipworms usually infect children over 5 years of age. If the infection is light there are usually no symptoms or signs. Heavy infection can cause:
- Loose stools containing blood.
- Rectal prolapse may occur with very heavy infections. With prolapse, the worms may be seen attached to the rectal mucosa.
- Iron deficiency anaemia due to chronic blood loss in the stool. This may be severe.
Whipworm infection can cause iron deficiency anaemia.