Sentence examples for photosensitivity from inspiring English sources

Porphyrias that primarily affect red blood cells tend to cause photosensitivity and blistering skin rashes, while those that affect the liver are more commonly associated with gastrointestinal symptoms.

Autoantibodies known as anti-Ro and anti-La, which are found in patients with Sjögren syndrome and in patients with systemic lupus, are suspected to play a role in photosensitivity, characterized by the development of skin rashes in response to exposure to ultraviolet light.

This aspect of vision is normally dependent on rhodopsin, which maintains its photosensitivity only in the presence of vitamin A. If the deficiency is severe and persists, especially in malnourished infants and children, a condition known as xerophthalmia may develop.

Tetracycline can also cause photosensitivity in patients exposed to sunlight.

After years of sunbathing — all women did it back then — Veronica developed photosensitivity, and stayed pale all summer.

*An earlier version of this article misidentified a protein used in a photosensitivity experiment.

Some people with chronic illnesses are highly susceptible to photosensitivity reactions and must always protect themselves from UVA exposure.

Most photosensitivity reactions result from exposure to UVA radiation, the so-called tanning rays that have been linked to premature aging of the skin and to melanoma, the most deadly form of skin cancer.

"If there is a reaction at the UVA-exposed site but not at the protected one, there's a high probability there will be a photosensitivity reaction in real life," Dr. Sarnoff said.

The best way to deal with a photosensitivity reaction is to sidestep it.

Testing and Treatment Determining the cause of a photosensitivity reaction is likely to start with an inventory of the substances you are exposed to that are common culprits.