Please ensure Javascript is enabled for purposes of website accessibility Hives - Genesis Dermatology
AB Clinic
(561) 296-5222 Patient Portal Shop
Contact Us

Hives

Hives

Hives, medically known as urticaria, are raised, itchy welts that can appear suddenly and shift locations over the course of hours. Most cases are acute and resolve within days, tied to an identifiable trigger like a food, medication, or infection. But when hives last more than six weeks, they’re considered chronic and often need a more thorough evaluation to identify an underlying cause. At Genesis Dermatology in Jupiter, FL, board-certified dermatologists help identify triggers and build a plan for lasting relief.
Request a Consultation

What Are Hives?

Hives develop when histamine and other chemicals are released in the skin, causing fluid to leak into the upper layers and produce raised, swollen welts. Acute hives, lasting less than six weeks, are usually tied to a clear trigger: a food, medication, insect sting, or infection.

Chronic hives, lasting six weeks or longer, are often idiopathic, meaning no specific trigger is ever identified, though they can also be linked to underlying immune conditions, thyroid disorders, chronic infections, or, rarely, other systemic issues.

How to Detect Hives

Hives have a distinctive presentation:
  • Raised, red or skin-colored welts that can appear and disappear within hours
  • Intense itching accompanying the welts
  • Welts that vary in size and can merge into larger patches
  • Individual welts that typically resolve within 24 hours, though new ones may appear elsewhere as others fade
  • Possible accompanying angioedema, deeper swelling of the lips, eyelids, hands, or feet

When Should You See a Doctor?

Most mild hives resolve on their own, but seek care if:
  • Hives last more than a few days without an obvious explanation
  • Hives keep recurring over a period of six weeks or longer (chronic hives)
  • You experience swelling of the lips, tongue, or throat, or have difficulty breathing, this is a medical emergency; call 911 or seek immediate care, as it can signal anaphylaxis
  • Hives keep appearing with no identifiable trigger
  • Symptoms are significant enough to disrupt your sleep or daily life

What Happens If Hives Are Left Untreated?

Chronic, unmanaged hives take a real toll on sleep, work, and overall quality of life the longer they go unaddressed, and without evaluation, an underlying trigger or condition driving the hives continues unidentified. Some patients live with recurring hives for months or years simply because they never sought an evaluation to look for an underlying cause.

In rarer cases, hives can be one visible sign of a broader allergic reaction that progresses to angioedema affecting the airway or full anaphylaxis, a life-threatening emergency that requires immediate treatment. If you’ve ever had hives accompanied by throat tightness, difficulty breathing, or swelling of the face, that history is important to discuss with a provider, since it may warrant carrying emergency epinephrine going forward.

The Genesis Dermatology Process

Here’s how we approach a hives evaluation:
  • A detailed history covering timing, duration, associated symptoms, and possible triggers
  • A skin exam to confirm the diagnosis and rule out other rash types
  • Bloodwork or allergy testing when chronic hives suggest a specific trigger or underlying condition worth investigating
  • A personalized treatment plan, typically starting with antihistamines and stepping up to additional therapies for chronic or treatment-resistant hives
  • A conversation about emergency preparedness, including an epinephrine prescription, if you have any history of a severe reaction
  • Follow-up care to track your response and adjust treatment as needed

Ready to Take the Next Step?

Recurring or unexplained hives deserve a closer look, not just another round of antihistamines. Schedule a consultation with the board-certified dermatologists at Genesis Dermatology in Jupiter, FL, to get to the root of what’s triggering yours.
Request a Consultation

Frequently Asked Questions

What's the difference between acute and chronic hives?
Acute hives last less than six weeks and are usually tied to a specific trigger. Chronic hives last six weeks or longer and often require further evaluation to look for an underlying cause.
No. While allergic reactions are a common cause of acute hives, chronic hives are frequently idiopathic or linked to non-allergic factors like immune system activity, infections, or thyroid conditions.
Yes, stress is a recognized trigger for hives in many people, though it’s rarely the only factor involved.
Individual welts usually resolve within 24 hours, though a full outbreak, especially chronic hives, can involve new welts appearing for days, weeks, or longer.
If hives are accompanied by swelling of the lips, tongue, or throat, or any difficulty breathing, seek emergency care immediately. This can indicate anaphylaxis, a life-threatening allergic reaction.
Yes. While chronic hives can be frustrating to manage, most patients see significant improvement with a stepped treatment approach, and many cases eventually resolve or become much easier to control over time.