Does anyone know the sysmptoms from suddenly stopping the plaquenil? I was having headaches really bad ( the kind that put you to bed) and during that time, ran out of plaquenil. After about 6 days my headaches suddenly STOPPED. ( Tried to call doctor, still haven't had a reply) Last night I started to have pin prick sensations all over my body, sorta like burning pin pricks and my muscles seem to want to move constantly. Picking up a prescription this afternoon, but was wondering if anyone here knows what exactly happens when you suddenly stop the plaquenil.