Case 40: A 25 year old with abdominal discomfort and obstructive jaundice Flashcards

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1
Q

What are the symptoms of ascaris worm infection?

A

Recurrent abdominal discomfort

Transient biliary colic

Pain under right rib cage, fever, jaundice

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2
Q

How does an iodine stain of faeces infected with ascaris appear?

A

Eggs about the size of hookworms

Outer shell has wavy edge, almost double wall

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3
Q

How does ascaris cause transient biliary colic?

A

Hatched larvae tangles up in duct

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4
Q

What is the infective stage of ascaris?

A

Fertile egg stage

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5
Q

What stage of ascaris are specimens seen in?

A

Adult stage seen in faeces

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6
Q

What stage of ascariasis makes the patient sick?

A

Larvae

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7
Q

Are freshly-excreted ascaris eggs infective?

A

No - must be in faeces about 15 days

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8
Q

How is ascariasis treated?

A

Antihelminthics – mebendazole, albendazole

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