Allergic reactions occur in the sun's ultraviolet radiation is triggered by changes in skin cells. These changes cause the immune system mistakenly identify the proteins in skin cells as harmful invaders. The immune system then makes antibodies to attack the cells, and this leads to symptoms.
For most people with allergies to the sun, exposing the skin to the sun shining in the spring or summer triggers allergic skin reaction. However, some people may have an allergic reaction during the winter months. In people who have a severe sun allergy, an allergic reaction can even be triggered by the interior lights.
Certain medications, chemicals and medical conditions that can make the skin sensitive to sunlight (photosensitivity). For example, an ingredient in your shampoo or having a disease like lupus can increase photosensitivity. In most cases this is not a true allergic reaction. However, it can cause symptoms similar to those caused by an allergy to the sun - and if you have an allergy to sunlight, which can aggravate your symptoms.
It is not clear why some people have a sun allergy, and others do not. Heritable traits can play a role.
For most people with allergies to the sun, exposing the skin to the sun shining in the spring or summer triggers allergic skin reaction. However, some people may have an allergic reaction during the winter months. In people who have a severe sun allergy, an allergic reaction can even be triggered by the interior lights.
Certain medications, chemicals and medical conditions that can make the skin sensitive to sunlight (photosensitivity). For example, an ingredient in your shampoo or having a disease like lupus can increase photosensitivity. In most cases this is not a true allergic reaction. However, it can cause symptoms similar to those caused by an allergy to the sun - and if you have an allergy to sunlight, which can aggravate your symptoms.
It is not clear why some people have a sun allergy, and others do not. Heritable traits can play a role.
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