Hi You seem to be describing a condition called Chronic Urticaria. In this condition, there is recurring itching and rashes. In upto 60% of patients an underlying cause cannot be identified.  so the management is only symptomatic. Atarax is a common medicine used to treat this and all the symptoms you mentioned can be caused by this. I would recommend you meet a dermatologist and change over to non sedating antihistamines which would not cause these symptoms. These would definitely improve your quality of life