Parasitology mnemonic

Soil-transmitted helminths

The mnemonic

Ascaris, Trichuris, Hookworm, Strongyloides

What each word stands for

  • AscarisIngested eggs; Loeffler pneumonitis
  • TrichurisWhipworm; rectal prolapse in children
  • HookwormLarvae penetrate skin; iron deficiency anaemia
  • StrongyloidesAutoinfection; hyperinfection in immunosuppression

Why it matters clinically

Gives the common intestinal worms and their entry route, which decides prevention such as footwear.

Where it stops being reliable

Entry route differs between them, and Enterobius, though not soil-transmitted, is a separate common worm.

Teaching aid, still awaiting independent review. Confirm facts in a standard source.

More mnemonics

Common questions

What is the Parasitology mnemonic?

Ascaris, Trichuris, Hookworm, Strongyloides. It helps you recall: Soil-transmitted helminths.

What does "Ascaris" stand for?

Ingested eggs; Loeffler pneumonitis

What does "Trichuris" stand for?

Whipworm; rectal prolapse in children

What does "Hookworm" stand for?

Larvae penetrate skin; iron deficiency anaemia

What are all the parts of the Ascaris, Trichuris, Hookworm, Strongyloides mnemonic?

Ascaris: Ingested eggs; Loeffler pneumonitis; Trichuris: Whipworm; rectal prolapse in children; Hookworm: Larvae penetrate skin; iron deficiency anaemia; Strongyloides: Autoinfection; hyperinfection in immunosuppression.

Which topic does this mnemonic belong to?

It belongs to Parasitology in Microbiology.

Where does this mnemonic stop being reliable?

Entry route differs between them, and Enterobius, though not soil-transmitted, is a separate common worm.

How is this useful clinically?

Gives the common intestinal worms and their entry route, which decides prevention such as footwear.

How do I make this mnemonic stick?

Say it aloud, write it from memory tomorrow, then again in a week. Then test yourself on a Microbiology question about Parasitology.

Is this a standard mnemonic?

It is a teaching aid written or adapted by our team. Some resemble ones students share informally. Check any fact that matters in a standard source.