Dear M.P.,
Product information reveals that Effexor may infrequently cause dermatological side effects including rash, herpes simplex, and herpes zoster.This has been reported, but is extremely rare.
I would advise notifying your physician if you have any recent history of chicken pox or any type of herpes.
Sincerely,
HFHS MD - RG
*KEYWORD: EFFEXOR
Herpes has no relation to Effexor. It is a viral sexually-transmitted illness.