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Light sensitivity or photosensitivity refers to a notable or increased reactivity to light. Apart from vision , human beings have many physiological and psychological responses to light. In rare individuals an atypical response may result in serious discomfort, disease, or injury.
Sensitivity of the skin to a light source can take various forms. People with particular skin types are more sensitive to sunburn . Particular medications make the skin more sensitive to sunlight; these include most of the tetracycline antibiotics , heart drugs amiodarone , and sulfonamides .
Photodermatitis, sometimes referred to as sun poisoning or photoallergy, is a form of allergic contact dermatitis in which the allergen must be activated by light to sensitize the allergic response, and to cause a rash or other systemic effects on subsequent exposure.
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“This means you can ‘stack’ minor, otherwise inconsequential allergic reactions together with seasonal pollen and allergens that can cause an increase in allergy symptoms,” continues Dr ...
However, the Asthma and Allergy Network finds that allergies can either worsen, stay the same, or, for some women, even improve during pregnancy. 3. Changes in immune system