Viral Infections Flashcards
Cause of slapped cheek syndrome
Parvovirus B-19
Treatment of ophthalmic zoster
acyclovir - drops or tablets - may prefer tablets as less epithelial toxic
Complications of Parvovirus B-19
spontaneous abortion, aplastic crisis, chronic anaemia
What predicts the severity of chicken pox
extremes of age and depressed cell mediated immunity
Causes of erythema multiform
HSV, drug eruptions, mycoplasma pneumonia bacteria
Virus causing chicken pox and shingles
varicella zoster
What medications should be avoided in chicken pox?
ibuprofen (necrotising fasciitis/secondary skin infection), aspirin (reye’s syndrome - leads to liver and brain swelling)
Presentation of chicken pox
generalised rash and fever, itch
What is eczema herpeticum?
the spread of herpes simplex virus to an area of eczema
Patients at risk of aplastic crisis
thalassaemia, sickle cell, hereditary spherocytosis
Sign of ophthalmic zoster
Hutchison’s sign - acute red eye + spots on the nose
Cause of molluscum contagiosum
pox virus
Presentation of Parvovirus B-19 in children
slapped cheek rash which may also occur on limbs
pain lasting longer than 4 weeks after shingles is called…?
post-herpetic neuralgia
How may the chicken pox vaccine help with shingles?
reduces the amount of shingles and associated post-herpetic neuralgia in >70s, routinely given