Tipos De Alergias En La Piel Fotos
## Skin Allergies: Types and Images Skin allergies, also known as cutaneous allergies or dermatological allergies, are a common condition that affects people of all ages. They occur when the body's immune system reacts to a foreign substance, known as an allergen, that comes into contact with the skin. This reaction can lead to a range of symptoms, including redness, swelling, itching, and inflammation. ### Types of Skin Allergies There are various types of skin allergies, each triggered by different allergens. Some of the most common types include: - **Contact dermatitis:** This is the most common type of skin allergy, caused by direct contact with an allergen, such as poison ivy, detergents, or jewelry. It often manifests as a rash with red, itchy, and swollen patches. - **Atopic dermatitis (eczema):** A chronic condition that causes dry, itchy, and inflamed skin. It is often associated with asthma and hay fever. - **Hives (urticaria):** These are raised, itchy bumps or welts that can appear suddenly anywhere on the body. They are often triggered by allergens such as food, medications, or insect bites. - **Angioedema:** A severe form of hives that causes swelling deep in the skin, often around the face, lips, or genitals. It can be life-threatening if it affects the airway. ### Causes of Skin Allergies Skin allergies can be caused by a wide range of allergens, including: - **Contact allergens:** These come into direct contact with the skin, such as poison ivy, detergents, perfumes, and certain metals. - **Inhalant allergens:** These are inhaled into the lungs, such as pollen, dust mites, and pet dander. - **Food allergens:** These are ingested, such as milk, eggs, peanuts, and shellfish. - **Insect bites or stings:** Bites or stings from insects, such as bees, wasps, and mosquitoes, can trigger allergic reactions in some people. ### Symptoms of Skin Allergies The symptoms of skin allergies vary depending on the type of allergy and the individual. Some common symptoms include: - Redness and swelling - Itching - Rashes - Bumps or welts - Burning or stinging sensation - Dryness and scaling - Blistering - Hives - Angioedema
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