![]() ![]() This information can be very helpful as you plan outings. It can also help figure out how long you can stay in sunlight before developing a rash. The test can also tell if you’re sensitive only to a specific wavelength of light. If you have a sun allergy or photosensitivity, you will develop a rash on that part of your skin. Your provider will shine a light source that gives off UVA and UVB light on a small patch of your skin. ![]() Most people can tell they have a sun allergy or photosensitivity because they develop a rash within a few minutes of being in sunlight.Ī healthcare provider can confirm an allergy or sensitivity to the sun with phototesting. The rash can also spread to other parts of the body, depending on what’s causing the photosensitivity.ġ of 6 How do you diagnose sun allergies? The changes usually appear on parts of the skin that are exposed to sunlight. Raised, red skin patches (sometimes with crusting) People with photosensitivity may notice different skin changes depending on what’s causing it. People can also develop a rash on parts of the skin that are covered by thin or white clothing because sunlight can pass easily through this type of material.Įven though it’s an allergy, most people don’t develop anaphylaxis, a life-threatening allergic reaction. The rash looks red, raised, or swollen, and forms on skin that’s exposed to the sun. Common medications that make people sensitive to light include:Ĭertain plants and fruits can also trigger photosensitivity if the extracts or juices are in direct contact with your skin. Medications can also trigger photosensitivity. People can also develop photosensitivity from medical conditions like: These conditions are rare but can lead to painful rashes that can scar. ![]() Some people are born with medical conditions that make them sensitive to UV light. People with photosensitivity -– or photodermatoses -– also develop red, painful, and sometimes itchy rashes when they come in contact with sunlight or UV light. Sun allergies tend to start off in late childhood and peak during the teenage years. This leads to itchy, red hives, and sometimes painful skin rashes. The immune system tells mast cells in the skin to release histamine. When someone with a sun allergy comes into contact with UV light, the immune system views the UV light as an attack. A sun allergy, or solar urticaria, is a type of chronic urticaria (hives). Sun allergy (solar urticaria)Ī sun allergy is a condition that causes someone to develop hives when they’re exposed to the sun or artificial ultraviolet (UV) light. People who are sensitive to sunlight may either have a sun allergy or photosensitivity. Here’s what you should know about sun allergies and how to manage them so you can still enjoy bright days. Painful, itchy rashes can start within minutes of sun exposure and can last for days. But for people with sun allergies or photosensitivity, a sunny day isn’t always a cause for celebration. Some people can’t wait to get out into the sunshine and soak up vitamin D, especially after a long winter. ![]()
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