Hymenolepis Nana

taken from:https://clem.mscd.edu/~churchcy/BIO3270/Images/Worms/hymenolepis_cycle.htm


Physiology and Structure:

H. nana, also known as dwarf tapeworm is only 2-4cm long. It has a simple life cycle and does not require to be an intermediate host.

Clinical Syndromes:

As our intestine has a few worms, there are no symptoms for H. nana. In heavy infections, hyperinfection and autoinfection occur. Symptoms are diarrhea, abdominal pain, headache and anorexia.


Stool examination will reveal the characteristics of H. nana egg, with its six-hooked embryo and polar filaments.

Treatment, Prevention and Control:

Improved sanitation, proper personal hygiene can treat H. nana cases.