Hives / Urticaria: Symptoms, Triggers, Home Care, and When to Seek Medical Care
Hives, also called urticaria, are raised, itchy welts on the skin. They may look red, pink, skin-colored, or slightly swollen. Hives can appear suddenly, move around the body, change shape, disappear, and then come back in a different area.
Many cases of hives are mild and temporary, but hives can sometimes be part of a serious allergic reaction. It is important to know when hives can be managed with supportive care and when urgent help is needed.
What do hives look like?
Hives may appear as:
Raised welts or bumps
Red, pink, or skin-colored patches
Itchy areas that come and go
Swollen areas with clear borders
Spots that change size or shape
Welts that move from one body area to another
Skin swelling around the lips, eyelids, hands, or feet
Individual hives often fade within 24 hours, but new ones may continue to appear.
Common triggers
Hives can be triggered by many things, including:
Foods
Medications
Insect stings or bites
Viral infections
Bacterial infections
Stress
Heat
Cold exposure
Exercise
Pressure on the skin
Sun exposure
Alcohol
Latex
Fragrances or skin products
Unknown causes
Sometimes the exact trigger is never found.
Food and medication triggers
Common food-related triggers may include nuts, shellfish, eggs, milk, wheat, soy, or food additives. Medication triggers may include antibiotics, NSAIDs such as ibuprofen or naproxen, aspirin, blood pressure medications, or other prescription and over-the-counter products.
Do not stop a prescribed medication without medical guidance unless you are having severe allergic reaction symptoms or were specifically instructed to stop.
Hives vs. angioedema
Hives are raised itchy welts on the skin.
Angioedema is deeper swelling under the skin, often around the lips, eyelids, face, hands, feet, tongue, or throat.
Angioedema can be mild, but swelling of the tongue, throat, or airway can be life-threatening.
When to seek medical care
Schedule a medical evaluation if you have:
Hives lasting more than a few days
Hives that keep coming back
Hives after starting a new medication
Hives after a food, insect sting, or new exposure
Significant itching affecting sleep
Swelling of the lips or eyelids without breathing symptoms
Hives with fever, joint pain, bruising, or pain
Hives that leave marks or last in the same spot more than 24 hours
No improvement with appropriate home care
A history of severe allergies
Concern for medication reaction
When to seek urgent or emergency care
Call 911 or seek emergency care right away if hives occur with:
Trouble breathing
Wheezing
Throat tightness
Tongue swelling
Lip or facial swelling that is worsening
Trouble swallowing
Hoarse voice
Dizziness or fainting
Chest tightness
Rapid heartbeat
Severe abdominal cramping
Repeated vomiting
Confusion
Feeling like you may pass out
Symptoms after a bee sting, food exposure, or medication exposure that are rapidly worsening
These may be signs of anaphylaxis, a life-threatening allergic reaction.
If you have been prescribed an epinephrine auto-injector and are having symptoms of anaphylaxis, use it as directed and call 911.
Acute vs. chronic hives
Acute hives last less than 6 weeks. They are often related to infection, food, medication, or an allergic trigger, though the exact cause may not be found.
Chronic hives last 6 weeks or longer or keep recurring. Chronic hives may require additional evaluation and sometimes referral to an allergy or dermatology specialist.
Can telehealth help?
Yes. Telehealth can often help with mild to moderate hives by reviewing symptoms, photos, timing, possible triggers, medication safety, and whether antihistamines or additional treatment may be appropriate.
Telehealth is not appropriate for severe allergic reaction symptoms, trouble breathing, throat swelling, tongue swelling, fainting, or rapidly worsening symptoms. Those require urgent or emergency care.
Prevention tips
To reduce future hives:
Track possible triggers
Avoid known allergens
Review medication reactions with your healthcare provider
Use fragrance-free skin products
Avoid overheating if heat triggers hives
Manage stress when possible
Treat infections appropriately
Carry epinephrine if prescribed
Follow up with allergy or dermatology if hives are recurrent or severe
Final thought
Hives are common and often improve with trigger avoidance and antihistamines, but they should be taken seriously when they occur with swelling, breathing problems, dizziness, vomiting, or rapidly worsening symptoms. Recurrent or persistent hives may need further evaluation.
This information is for educational purposes only and does not replace medical advice, diagnosis, or treatment. If you are experiencing severe symptoms, signs of infection, severe allergic reaction symptoms, trouble breathing, or a medical emergency, call 911 or go to the nearest emergency room.
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