A.B.
My son would get Croup often because of his asthma...now that it is under control I have to say I did notice some little spots around his eyes caused by the pressure of his coughing so hard. Now if the rashes are elsewhere you might want to keep an eye on the meds cause he just might be allergic. I have never heard of croup causing hives but like I said I know my son had the little spots. Hope this helps and your son gets better...I hated croup when my son had it...GOOD LUCK!