 [ Symptoms ] contagious period for cold i have been sick with a cold off and on for about 2 months the last time i got sick was about week ago i am going to visit my sister and her newborn is it safe to do so [ Disease ] i do not see how this is an allergic reaction check your renal function ecg on heart check blood pressure and do complete blood count for anemia itching in a sign of oxygen deprivation not always an allergygood luck