Shingles-Reactivation of the varicella-zoster virus (VZV) Flashcards
What is shingles due to?
Reactivation of the varicella zoster virus in the dorsal root ganglia
How does shingles tend to distribute?
Dermatomal distribution
What are the most commonly affected dermatomes?
T1-L2
How can shingles present?
Tingling feeling in a dermatomal distribution
Progresses to erythematous papules occurring along one or more dermatomes within a few days
Erythematous papules develop into fluid-filled vesicles which then crust over and heal.
What happens to the erthematous papules in someone with shingles?
Becomes vesicular and then crusts over
How is the rash described in someone with shingles?
Well demarcated erythematous rash that becomes vesicular
Doesn’t cross the midline
What other symptoms can shingles present with?
Flu like symptoms
fever, headache, malaise
What can occur if shingles affects the trigeminal nerve?
Eye is affected- corneal ulcers
How is shingles diagnosed?
Clinically
What is the most common complication of shingles?
Post-herpetic neuralgia
What is the most common complication of shingles?
Post-herpetic neuralgia
What is post-herpetic neuralgia?
Pain occurring at site of healed shingles infection
Can cause neuropathic type pain- burning, pins and needles
Can cause allodynia
Is shingles contagious?
Yes
Who does someone with shingles need to avoid?
Immunocompromised
Pregnant
How long is someone with shingles infectious?
Until all the lesions have crusted over- usualy 5-7 days
