My Husband Had A Brain Stem Stroke And Is Now

My husband had a brain stem stroke and is now on the following medications: Atorvastatin, Lisinopril, Clopidogrel, Tramadol, Tamsulosin and Dutasteride. When in bed last night, he told me that he felt like his skin was crawling on his arms. This evening he is getting this feeling again. Could this be a possible side effect to one of these medications?