This is associated with a withdrawal syndrome and since your doctor is trying to wean you off it after 10 long years of therapy. The most common
symptoms of effexor
withdrawal are dizziness, electric shock like feelings, brain fog, and shock like symptoms in head, shoulders and arms. The side effects associated with it are insomnia, weight gain, night mares, extra pyramidal symptoms like dystonias, etc. you need to deal with this drug with the help of your neurologist. Hope this helps.