Urticaria (Skin Allergy): What Causes It and How Is It Treated?

AI OVERVIEW:

Urticaria, or hives, causes itchy, raised patches on the skin. It may result from allergies, medications, infections, or other triggers. Dr. Mriganka Mehra at Emara Skin Clinic can help identify the cause and guide suitable treatment.

Urticaria, commonly known as hives, is a skin condition that causes itchy, raised bumps or patches on the skin. These marks can appear suddenly and may vary in size and shape. In some cases, they disappear within a few hours and reappear in another area.

Urticaria can affect people of any age. While it is often temporary, frequent or long-lasting hives may need proper medical evaluation. Understanding the causes, symptoms, and treatment options can help you manage the condition more effectively.

What Is Urticaria?

Urticaria is a skin reaction that occurs when certain chemicals, including histamine, are released in the body. This causes small blood vessels in the skin to become more permeable, leading to swelling and the formation of raised, itchy areas.

Hives can develop on almost any part of the body. They may appear as small individual bumps or larger patches that join together.

There are two main types:

Acute urticaria: This usually lasts for less than six weeks and may develop after an allergic reaction, infection, medication, or other trigger.

Chronic urticaria: When hives continue or repeatedly occur for more than six weeks, they are considered chronic. The exact cause is not always easy to identify.

Common Symptoms of Urticaria

The symptoms of urticaria can vary from person to person. Common signs include:

Raised, red or skin-coloured bumps
Intense itching
Swelling around the affected area
Hives that change shape or move to different areas
Individual welts that usually fade within 24 hours
Episodes that may come and go

Some people with urticaria may also develop angioedema, which causes deeper swelling around areas such as the lips, eyelids, hands, or feet.

What Causes Urticaria?

Urticaria can have several possible triggers. In some cases, the cause is easy to identify, while in others, hives may appear without a clear reason.

Common causes and triggers include:

Allergic Reactions:

Certain foods, such as nuts, eggs, milk, shellfish, or other ingredients, may trigger hives. Insect bites and contact with substances like latex can also cause an allergic reaction.

Medications:

Some medicines can trigger hives as a side effect or due to an allergic reaction. Antibiotics, pain relievers, and other medications may be possible triggers.

Infections:

Viral or bacterial infections can sometimes lead to urticaria. Hives may develop during an infection or shortly after recovery.

Physical Triggers:

Cold, heat, sunlight, sweating, exercise, pressure, or friction can cause hives in some people. These triggers are often linked to physical or inducible urticaria.

Stress:

Stress may worsen hives in people who are already prone to urticaria. However, it is not the underlying cause in every case.

How Is Urticaria Diagnosed?

A dermatologist usually diagnoses urticaria by examining the skin and asking about the patient’s symptoms, medical history, medications, diet, recent infections, and possible triggers.

If the hives are persistent or recurring, the doctor may recommend additional tests depending on the individual’s symptoms and medical history. Allergy testing is not automatically required for every person with urticaria.

Keeping a record of when the hives appear, what you ate, which medicines you took, and what you were doing before the outbreak may help identify possible triggers.

How Is Urticaria Treated?

Treatment depends on the type and severity of urticaria and whether a specific trigger can be identified.

Antihistamines:

Non-sedating antihistamines are commonly used to control itching and reduce hives. Your dermatologist may recommend the appropriate medicine and dosage based on your condition.

Avoiding Triggers:

If a specific trigger is identified, avoiding it can help reduce future outbreaks. For example, people with cold-induced urticaria may need to limit exposure to cold temperatures.

Additional Treatment for Chronic Cases

People with chronic urticaria that does not respond adequately to standard antihistamines may need other prescription treatments. A dermatologist can assess the condition and recommend appropriate options.

When Should You See a Dermatologist?

Occasional mild hives may disappear on their own, but medical evaluation is important when hives are frequent, persistent, severe, or affecting daily life.

Seek urgent medical attention if hives occur with difficulty breathing, throat or tongue swelling, dizziness, fainting, or other signs of a severe allergic reaction. These symptoms can indicate a medical emergency.

Final Thoughts

Urticaria can be uncomfortable and, in some cases, difficult to manage, especially when the exact cause is unclear. Identifying possible triggers and receiving appropriate treatment can help control itching and reduce repeated outbreaks.

If you experience frequent hives, unexplained swelling, or recurring skin reactions, consider consulting a qualified dermatologist for proper evaluation. A proper diagnosis can help identify possible triggers and determine a suitable treatment approach.

If you are looking for a Skin Specialist in Delhi for hives, allergies, or other skin concerns, contact us today to schedule a consultation and discuss your symptoms with a qualified skin specialist.