My Husband Is Having An Allergic Reaction To One Of

my husband is having an allergic reaction to one of the drugs he was given for sinusitis and a bad cough and fever on Friday night He is taking Augmentin,twice a day for 10 days, and he got a shot of antibiotics and another shot of steroids at the walk in clinic on Friday night. Also he took the Rite Aid version of daytime Suphedrine PE, about 6 hours ago for his congestion. Which of these could cause a rash, and what do you suggest
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