Signs and symptoms of penicillin allergy often occur within an hour after taking the drug including skin rash, itching, swelling, shortness of breath etc. Anaphylaxis is a rare life-threatening allergic reaction causing widespread dysfunction of body systems such as tight airways and throat trouble breathing etc. Less common reactions can occur day...

You may experience side effects from penicillin which are not allergic reactions to the drug such as mild nausea or diarrhea; however if you experience signs or symptoms of a severe reaction see your doctor immediately for proper diagnosis between side effect or allergic reaction to ensure best treatment options in future use. Call 911 if suspected...

Penicillin allergy occurs when your immune system becomes hypersensitive to the drug by misidentifying it as harmful substance creating antibodies flagging it for attack during next exposure resulting in chemical release causing signs/symptoms associated with allergic reaction . Previous exposure could have been trace amounts in food supply suffici...