My husband was recently diagnosed with hyperthyroidism and was prescribed 25 mg atenolol,10 mg methimazole, and VitD. He began to experience very itchy skin (with no rash or redness) and the doctor switched the atenolol to propranolol (60mg). He has been on this new medication for 3 days now and has just developed large, itchy welts on his forearms, the backs of his thighs, and now his lower stomach. We are fairly certain that the reaction has not been caused by laundry detergent, insects, or another allergen (poison ivy/amoxicillan) . His prescribing doctor will not be in until monday...should he stop his medications until then? Is it safe to stop and then restart again? Or should we go to a urgent care/open on weekends type office even though the doctor he sees will not be familiar with his history?