Skin Rash
A common symptom of penicillin and related antibiotics allergy is developing a skin rash. This typically appears as an itchy, red, and bumpy rash on the skin shortly after taking the drug.
Itching
Intense itching all over the body is another common symptom of a penicillin allergy. This can occur even when no rash is visible.
Swelling
Swelling of the face, lips, and tongue can occur as part of an allergic reaction. This can lead to difficulty breathing if the swelling occurs in the airways.
Wheezing
Penicillin allergy may cause wheezing – a high-pitched whistling sound when you breathe. This symptom is caused by a narrowing of the airways.
Hives
Hives, also known as urticaria, are red, itchy bumps that come up on the skin. They're often a symptom of an allergic reaction to medications, like penicillin.
Anaphylaxis
In rare cases, penicillin and related antibiotics can trigger a severe and potentially life-threatening allergic reaction known as anaphylaxis. Symptoms may include shortness of breath, a rapid, irregular heartbeat, dizziness, or loss of consciousness.
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