http://www.digitaljournal.com/life/health/why-too-much-sun-can-make-you-feel-sick/article/466824

Why too much sun can make you feel sick

Posted Jun 1, 2016 by Tim Sandle
The sun is beginning to shine strongly in the northern hemisphere. However, many people make the same mistakes in becoming dehydrated or sun burnt. Taking to social media, the Texas A&M College of Nursing presents new advice.
South Beach  Miami Beach  Florida.
South Beach, Miami Beach, Florida.
Averette
A little sun is good for most people, a way of boosting vitamin D and in feeling good. However, there are risks: becoming sun burnt (often through the misapplication of sunscreen lotion or forgoing it altogether); becoming dehydrated; or suffering with a “sun hangover.”
Focusing on the effects of too much sun the next day — the so-called “hangover effect,” the Texas A&M Health Science Center have been providing advice about how to avoid this affect, and they’ve done so through the use of Twitter:
Texas A&M provides innovative research  education and service in dentistry  medicine  nursing  pharm...
Texas A&M provides innovative research, education and service in dentistry, medicine, nursing, pharmacy, public health and medical sciences. This tweet is about sun safety.
As well as utilizing their Facebook page.
The reason for the sun hangover effect is because prolonged exposure to the sun can trigger an inflammatory response, and this response can resonates throughout the whole body. The effect can be, on the day after a long session of soaking up the rays, to feel sluggish, due to muscle ache, together with general feelings of being off-color. Although sunscreen helps (especially with sun protection factors above 30) avoid burning, the inflammatory response can still happen.
According to Professor Cindy Weston, who teaches nursing at the Texas A&M College “if you’re sunburned and have inflammation, this happens as a result of your body trying to heal and repair.”
She adds: “Your skin is an organ, and when it’s damaged this activates the entire immune system to mobilize and repair it.” This is much like the response the body makes when battling an infection. Taking anti-inflammatory medicines may also help.
One way to overcome this is keeping hydrated. Here, Professor Weston points out, the only thing to drink is water. Both alcohol and soda have their downsides and can contribute to the effects being worse the following day. It is also important, the Professor points out, to drink sips of water regularly. Small sips and often is better than drinking a larger quantity of water before going out or after coming back indoors.
On the question of how much water, this partly dependent on the individual and the ambient temperature and humidity. In general, Weston recommends consuming a half to a full liter of water per hour, in order to keep the body sufficiently hydrated.
In terms of new devices, Weston singles out devices like water bottle equipped backpacks, which allow people to drink water on the move. For those who don’t use such devices, or forget to carry water, and become sunburnt, the best treatment is to continue to drink water and attempt to rehydrate the body.