QuestionSBA
QuestionChoice
This is one of the most common causes of gastroenteritis. The majority of patients experience vomiting and diarrhoea but is not commonly associated with itchiness and an isolated eosinophilia.
10004242
b
Norovirus
QuestionChoice
A. lumbricoides is a giant roundworm that can infect and inhabit a patient's gut. it can lead to digestive upsets, malnutrition, and intestinal blockages and may even invade the mouth and nose. It is not commonly associated with itchiness and therefore this diagnosis is unlikely.
10004243
c
Ascaris lumbricoides infection
QuestionChoice
This protozoan causes an infection of the small intestine known as Giardiasis. It is one of the most common causes of travellers' diarrhoea. It normally presents with self-limiting diarrhoea whereby the stools are classically loose, foul-smelling and fatty. It is not associated with anal pruritis and is therefore unlikely.
10004245
e
Giardia lamblia
QuestionChoice
This is a hookworm that is often picked up while walking barefoot in infected areas. It attaches to the small intestine and causes hypochromic anaemia. It is not associated with anal itchiness.
10004244
d
Ancylostoma duodenale
QuestionChoice
Enterobius Vermicularis is a type of threadworm that can infect the GI tract. Female worms migrate to the anus at night and lay thousands of eggs. This results in intense itching of the anal region and also can lead to diarrhoea and elevated eosinophils. Therefore, this is the most likely diagnosis.
10004241
a
Enterobius Vermicularis infection
Concept
Chapter
2693
4254
Giardiasis
Topic
136
Gastroenterology
13395
An 18-year-old male attends his GP practice complaining of diarrhoea and severe itchiness in his anus. A full blood count reveals eosinophilia.

Which of the following is the most likely diagnosis?
a