Itchy on Amitriptyline?!

I started an antidepressant last week, 10mg of amitriptyline. I thought this would be a wiser choice than other SSRIs because it's noted to be a strong antihistamine. I thought it would help for multiple issues - anxiety, depression, sleep issues, and skin itching/crawling that often keeps me up at night when my histamine levels are out of whack. However, since starting it the itchiness and skin crawling is worse somehow? For the most part I had the itching under control with 4mg of Ketotifen. I feel so desperate and hopeless now. I suspect the SSRIs I took years ago triggered something in my body because I never had these symptoms before and they still haven't gone away after years of not taking them. I just want to feel sane again..

Has anyone experienced this? Are there any other medications that I should ask my doctor about that may help with all of these symptoms? Or at least not trigger them more.. Is this just a temporary phase of getting use to the medication?