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Practice 10-Minute Consultation

Herpes zoster ophthalmicus

BMJ 2019; 364 doi: https://doi.org/10.1136/bmj.k5234 (Published 17 January 2019) Cite this as: BMJ 2019;364:k5234

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Re: Herpes zoster ophthalmicus. Comments from an ancient.

May I thank Ting, Ghosh and Ghosh for an eminently readable article? A couple of points.
1. CYANOCOBALAMIN by injection.
It was, once, reputed to be very effective in reducing the associated radicular pain.
Has it been consigned to the dustbin of history? No adverse effects were ever reported.
2. PERIOD OF INFECTIVITY.
In CHICKEN POX, - it was said that a week after the first crop of vesicles appear, the patient is non-infective. It was thought that the body inactivated the virus. If that “ thought” is correct, then I wouldlike to know how the virus hiding in the dorsal horns manages to travel down the axons to the terminals and creates pathology ( vesicles) there in the skin.

Thank you

Competing interests: No competing interests

19 January 2019
JK Anand
Retired doctor
Free spirit
Peterborough