Naebang Station Dermatology: Causes of Hives—There Is a Reason If Your Skin Suddenly Swells and Itches

Naebang Station Dermatology: Causes of Hives

Have you ever experienced your skin suddenly swelling in various places for no apparent reason, accompanied by unbearable itching that disappeared after a few hours? Some people become confused when the symptoms continue to recur even after they stop eating various foods because they suspect food is the cause. Many people I meet in the consultation room say things like, “I don’t know what I ate that caused this,” or “Nothing in particular had changed, but my whole body suddenly broke out, and I was scared.”

Hives are a skin condition in which increased vascular permeability in the skin and mucous membranes allows the fluid component of blood to leak into the tissues, causing the skin to swell and severe itching to occur. Many people think that food allergies are the cause of hives, but in reality, a much wider range of factors often work together, including abnormal immune responses, stress, infections, and physical stimuli. Today, I will explain in detail what causes hives and how they should be treated and managed.

The causes of hives are much more varied than you might think

Naebang Station Dermatology: Causes of Hives

Many people think that food is the cause of hives, but food is actually the direct cause in only a portion of all hives cases. The causes of hives are broadly divided into allergic and non-allergic causes. Allergic hives occur when allergens such as specific foods, medications, or insect venom excessively activate the immune response. Non-allergic causes are much more diverse. In many cases, infectious diseases such as colds or bacterial infections act as triggers, or medications such as aspirin or nonsteroidal anti-inflammatory pain relievers are responsible.

There are also physical hives, in which physical stimuli such as pressure, friction, heat, or cold cause hives. Stress and lack of sleep can disrupt immune balance, triggering or worsening symptoms. In particular, in cases of chronic hives that recur for more than six weeks, it is often difficult to identify a clear cause, and they are frequently classified as idiopathic.

Accurate diagnosis to identify the cause of hives is the first step toward treatment

Naebang Station Dermatology: Causes of Hives

If treatment is repeatedly used only to relieve symptoms without identifying the cause of hives, the symptoms may continue to recur because of ongoing exposure to the same cause. At a dermatology clinic, we carefully assess the pattern and duration of the hives, accompanying symptoms, medications currently being taken, any recent infections, and changes in the living environment to trace the cause.

When allergic hives are suspected, specific allergens may be identified through blood tests or skin reaction tests. When physical hives are suspected, the relevant stimulus may be reproduced to check for a reaction. Clearly identifying the cause of hives is the most important first step in determining the direction of treatment.

Symptoms can be quickly controlled with antihistamines and medication

Naebang Station Dermatology: Causes of Hives

While identifying the cause of hives, medication is also used to quickly relieve symptoms that have already appeared. Antihistamines are the foundation of hives treatment. Since histamine is a major substance that increases vascular permeability and causes hives, suppressing this reaction with antihistamines can quickly relieve itching and swelling. In many cases, the effect is maintained by taking them consistently, rather than only on days when symptoms are present.

When antihistamines alone are not sufficient, a leukotriene inhibitor may be added, or a short course of steroids may be used alongside them. If an infection is the cause of the hives, treating the infection should be carried out alongside hives treatment. If a medication currently being taken is the cause, it may be necessary to stop that medication or switch to an alternative.

Lifestyle management to reduce triggers helps prevent recurrence

Naebang Station Dermatology: Causes of Hives

Along with identifying and avoiding the causes of hives, reducing lifestyle factors that worsen symptoms is also important for preventing recurrence. Stress and lack of sleep are major factors that can worsen hives by reducing the body’s immune-regulation function, so maintaining regular sleep and managing stress are part of hives management. Alcohol can dilate blood vessels and trigger or worsen hives symptoms, so it is best to reduce alcohol consumption whenever possible. If you are taking any medications, be sure to tell your doctor during your consultation so they can check whether they contain ingredients that may cause hives. In cases of physical hives, avoiding the relevant stimulus is the most effective management method. Hives can be adequately controlled by identifying the cause, consistently receiving medication, and managing lifestyle factors together.

Trying to find the cause of hives on your own can take a long time and may allow the symptoms to become chronic. If recurring hives have been causing you discomfort, work with a dermatologist to accurately identify the cause of your hives and find a personalized treatment plan. I will carefully help you regain a comfortable daily life free from itchy and bothersome symptoms.