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A drug allergy is an allergy to a drug, most commonly a medication, ... Symptoms of drug hypersensitivity reactions can be similar to non-allergic adverse effects.
Identifying an allergy to penicillin requires a hypersensitivity skin test, which diagnoses IgE-mediated immune responses caused by penicillin. This test is typically performed by an allergist who uses a skin-prick and intradermal injection of penicilloyl-polylysine, a negative control (normal saline), and a positive control ( histamine ).
Signs and symptoms include fever, chills, shivers, feeling sick, headache, fast heart beat, low blood pressure, breathing fast, flushing of skin, muscle aches, and worsening of skin lesions. [1] It may sometimes be mistaken as an allergy to the antibiotic.
Treating allergy symptoms with over-the-counter medication, saline spray, and, if warranted, allergy medication or injections from your doctor, may also help reduce GI symptoms as a result.
Aside from these ambient allergens, allergic reactions can result from foods, insect stings, and reactions to medications like aspirin and antibiotics such as penicillin. Symptoms of food allergy include abdominal pain, bloating, vomiting, diarrhea, itchy skin, and hives. Food allergies rarely cause respiratory (asthmatic) reactions, or ...
It is not a true drug allergy, because allergies are type I hypersensitivity reactions, but repeated exposure to the offending agent can result in an anaphylactic reaction. [ 36 ] [ 37 ] Allergy will occur in 1–10% of people, presenting as a skin rash after exposure.
Like other antibiotics, cefalexin cannot treat viral infections, such as the flu, common cold or acute bronchitis. [4] Cefalexin can be used in those who have mild or moderate allergies to penicillin. [4] However, it is not recommended in those with severe penicillin allergies. [4] Common side effects include stomach upset and diarrhea. [4]
Gross, but true: cockroach saliva, feces, and body parts can cause allergies and asthma symptoms if in the air, including coughing, congestion, wheezing, ear and sinus infections, and skin irritation.
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