Venlafaxine Withdrawal Symptoms

I’m tapering off venlafaxine after 14 years. No problems tapering down from 150 mg to 75 mg over one year. Withdrawal (flu-like feeling, drowsiness, anxiety, etc.) began when I went down to 62.5, then 50 mg, then back to 62.5 mg. No brain zaps. About a week ago, I began having itchy skin, that comes and goes. I have never had any allergies or skin problems. Has anyone had this withdrawal symptom? Do antihistamines help?