Hives (Urticaria)
Hives are itchy, raised welts on the skin that can range from small spots to large blotches. They are typically triggered by a reaction to food, medicine, or other environmental irritants.
Overview
Hives are itchy, raised welts on the skin that can range from small spots to large blotches. They are typically triggered by a reaction to food, medicine, or other environmental irritants.
Symptoms
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Causes
- •Allergic reactions to food or medicine
- •Insect stings or bites
- •Physical triggers like cold, heat, or sunlight
- •Infections or underlying illness
Risk factors
- •Known allergies or asthma
- •Recent illness or infection
- •Family history of hives
- •High stress levels
How it progresses
3 stages- OnsetSymptoms appear, often triggered by a known cause.Often missed
- Active phaseSymptoms peak; self-care or short treatment usually helps.
- ResolutionSymptoms ease over days to weeks with proper care.
How it's diagnosed
- •Physical examination of the skin
- •Review of medical history and triggers激
- •Skin prick allergy testing
- •Blood tests to rule out infections
Treatment options
General educational information only — no dosage advice. Always follow guidance from a qualified clinician.
- •Antihistamines to reduce itching and swelling
- •Corticosteroids for severe inflammation
- •Epinephrine for emergency allergic reactions
- •Apply cool compresses to the skin
- •Wear loose-fitting, smooth-textured clothing
- •Avoid known triggers or irritants
- •Use over-the-counter anti-itch lotions
- •Identifying and avoiding triggers
Complications
- •Reduced quality of life
- •Worsening symptoms over time
- •Recurrence of hives (urticaria)
Prevention
- •Maintain a healthy lifestyle
- •See a clinician for routine check-ups
When to seek help
- •Symptoms persist beyond a few days
- •Symptoms interfere with daily activities
- •New or worsening symptoms appear
- •Concerning changes related to hives (urticaria)
- Difficulty breathing or wheezing
- Swelling of the lips, tongue, or throat
- Dizziness or feeling faint
- Rapid heartbeat
In any emergency, call your local emergency number or go to the nearest emergency department.
Real-world questions
- ›Can Hives (Urticaria) cause headaches?
- ›Is Hives (Urticaria) reversible?
- ›How quickly does Hives (Urticaria) progress?
- ›Is Hives (Urticaria) hereditary?
- ›Can Hives (Urticaria) be prevented?
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Frequently asked questions
Possible causes of Hives (Urticaria) include Allergic reactions to food or medicine, Insect stings or bites, Physical triggers like cold, heat, or sunlight, Infections or underlying illness.
Hives (Urticaria) is generally mild, but severity can vary. Seek care if symptoms are severe or persistent.
Duration varies between individuals. Many cases improve with appropriate care, while others may persist longer and require ongoing management.
Some milder cases may improve with rest and self-care. If symptoms persist or worsen, consult a healthcare professional.
Consider seeing a clinician if symptoms are severe, persistent, worsening, or if you have any concerns related to general.
Sources
Information based on general medical references such as:
Last reviewed: May 2026