Why someone is unable to withstand the sun's heat, and what causes it?

Why can't someone hold the sun's heat, and what is the cause?

wow an amazing question, many people are allergic to sunlight. sun allergy is a reaction of the body's immune system to sunlight. The most common is an itchy red rash. The most common location is seen in the V area in the neck, back of the hand, the outer surface of the lower arms and legs.

This must be careful, some people who have chronic diseases such as SLE or Systemic Lupus Erythematosus are often weak when exposed to the sun above 8 am. So people with severe vitiligo or migraine, the disease can get worse if exposed to the sun. In the case of sun allergy, skin reactions may be more severe, such as itching or blistering skin that even occurs on the skin covered with clothing. And if the clothes worn are already bacterial, you must be wary.
Sun allergy is triggered by changes that occur in the skin exposed to sunlight. It is not clear why the body develops this reaction. However, the immune system recognizes foreign components of the skin (which change due to the sun), and the body activates defense against these components.

Sun allergy occurs in certain sensitive people. And in some cases, they can be triggered by exposure to sunlight for only a few moments. Scientists don't know exactly why some people are allergic to the sun and others don't. There is evidence to suggest that some forms of sun allergy are inherited from parents.