Hives and angioedema - Symptoms and causes - Mayo Clinic
2023年10月27日 · Angioedema can arise with hives or alone. It causes swelling in the deeper layers of skin, often around the face and lips. Short-lived (acute) hives and angioedema are common. Most times, they are harmless, clear up within in a day and don't leave any lasting marks, even without treatment.
Chronic hives - Symptoms and causes - Mayo Clinic
2024年10月1日 · Hives — also called urticaria (ur-tih-KAR-e-uh) — is a skin reaction that causes itchy welts. Chronic hives are welts that last for more than six weeks and return often over months or years. Often, the cause of chronic hives isn't clear.
Hives and angioedema - Diagnosis and treatment - Mayo Clinic
2023年10月27日 · To diagnose hives or angioedema, your doctor will likely look at your welts or areas of swelling and ask about your medical history. You may also need blood tests or an allergy skin test.
Chronic hives - Diagnosis and treatment - Mayo Clinic
2024年10月1日 · To diagnose chronic hives, your healthcare professional will likely talk with you about your symptoms and look at your skin. One of the telling features of chronic hives is that the welts come and go at random, with each spot usually lasting less than 24 hours.
Contact dermatitis - Symptoms and causes - Mayo Clinic
2024年5月2日 · Contact dermatitis shows up on skin that has been directly exposed to the substance causing the reaction. For example, the rash may show up along a leg that brushed against poison ivy. The rash can develop within minutes to hours of exposure, and it …
Types of dermatitis (dermatitis pictures) - Mayo Clinic
2023年12月19日 · Dermatitis also is called eczema. Symptoms include itchiness, scaly skin, a swollen rash, oozing blisters and dandruff-like scaling. The condition is not passed from person to person. Learn about the symptoms of common types of dermatitis.
Dermatitis - Symptoms and causes - Mayo Clinic
Dermatitis is a common condition that causes swelling and irritation of the skin. It has many causes and forms and often involves itchy, dry skin or a rash. Or it might cause the skin to blister, ooze, crust or flake. Three common types of this condition are atopic dermatitis, contact dermatitis and seborrheic dermatitis.
Scarlet fever - Symptoms & causes - Mayo Clinic
2022年6月7日 · The red rash of scarlet fever usually begins on the face or neck, later spreading to the chest, trunk, arms and legs. Scarlet fever is most common in children 5 to 15 years of age. Although scarlet fever was once considered a serious childhood illness, antibiotic treatments have made it less threatening.
Common baby rashes - Mayo Clinic
2024年3月29日 · Most often baby rashes can be managed by careful attention to bathing, moisturizers and the baby's environment. But no matter what you do, baby rashes can still show up. Here are a few of the most common baby rashes and how to manage them.
Heat rash - Symptoms & causes - Mayo Clinic
2022年5月6日 · Heat rash — also known as prickly heat and miliaria — isn't just for babies. It affects adults, too, especially in hot, humid conditions. Heat rash occurs when sweat is trapped in the skin. Symptoms can range from small blisters to deep, inflamed lumps. Some forms of heat rash are very itchy.