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  1. Photosensitivity: What it is, Symptoms & Rash, Causes

    Mar 24, 2025 · If your symptoms are a side effect of a medicine or skin care product, stopping or reducing its use may help photosensitive reactions go away. Be sure to check with your …

  2. Photosensitivity - Wikipedia

    In medicine, photosensitivity is an abnormal reaction of the skin to light. There are two types: photoallergy and phototoxicity. [1][2] The photosensitive ganglion cells in the mammalian eye …

  3. Photosensitivity - The Skin Cancer Foundation

    You can become photosensitive as a result of prescription or over-the-counter medications, a medical condition or genetic disorder, or even by using certain types of skin care products. …

  4. Photosensitivity - Dermatologic Disorders - Merck Manual …

    In phototoxicity, light-absorbing compounds directly generate free radicals and inflammatory mediators, causing tissue damage manifesting as pain and erythema (like sunburn). This …

  5. Photosensitivity: Definition & Patient Education - Healthline

    Mar 30, 2018 · Photosensitivity is an extreme sensitivity to ultraviolet (UV) rays from the sun and other light sources. Most people are at risk of developing sunburn during long exposure to …

  6. Photosensitivity - What You Need to Know - Drugs.com

    Dec 9, 2025 · Photosensitivity is a skin reaction caused or worsened by sunlight. What increases my risk for photosensitivity? What are the signs and symptoms of photosensitivity? Your signs …

  7. Sun Allergy: Symptoms, Causes, Treatment and More - Health

    Sep 18, 2025 · Sun allergy, or photosensitivity, is characterized by an adverse reaction to sunlight with symptoms like a blistering rash.

  8. Photosensitivity (sun allergy) - DermNet

    People with very white skin who don’t tan on exposure to the sun (Fitzpatrick skin type 1), especially if they also have red hair and blue eyes, are often considered photosensitive, …

  9. Skin light sensitivity (photosensitivity) - NHS inform

    Jun 17, 2025 · Skin light sensitivity (photosensitivity) means you have an unusual reaction to light.

  10. Sun Allergy (Photosensitivity) - Harvard Health

    May 7, 2024 · Sun allergies are triggered by changes that occur in sun-exposed skin. It is not clear why the body develops this reaction. However, the immune system recognizes some …