Web31 jan. 2024 · urinary retention. Severe side effects can include: hives. a skin rash. difficulty breathing or swallowing. swelling in the face, mouth, or throat. delirium. … Web14 mrt. 2024 · There are two groups of fast-acting allergy medications: decongestants and antihistamines. Decongestants start working within about 30 minutes. Most antihistamines take a few hours to fully kick in. Decongestants (Sudafed, Sudafed PE, Afrin) Decongestants work the fastest to relieve allergy symptoms.
How Allergies Work: Understanding the Process
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Antihistamines - NHS
Web26 okt. 2024 · Symptoms of a serious drug allergy often occur within an hour after taking a drug. Other reactions, particularly rashes, can occur hours, days or weeks later. Drug allergy symptoms may include: Skin rash Hives Itching Fever Swelling Shortness of breath Wheezing Runny nose Itchy, watery eyes Anaphylaxis Web25 okt. 2024 · What Is Anaphylactic Shock How do allergy medications work? Anaphylactic shock, also called anaphylaxis, is a severe, life-threatening reaction to certain allergens. Body tissues may swell, including tissues in the throat. Anaphylactic shock is also characterized by a sudden drop in blood pressure. The following are the most common … Web14 dec. 2024 · The primary toxic agent is histidine, which breaks down into histamine. Symptoms occur quickly, usually within an hour of eating fish. They include: 3 Rash … grant veeder black hawk county auditor