August 8th, 2011 by Jeffrey Benabio, M.D. in Health Tips
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Have you ever had a sunburn? First it hurts. Then it itches. And itches. And itches.
Why is that?
Sunburn is caused by ultraviolet (UV) radiation damage to your skin. Too much UV damages your skin cell’s DNA, and your immune system responds by killing off the bad cells. Because UV radiation doesn’t penetrate (unlike X-rays for example), it damages only the surface layer of your skin. This outermost layer happens to be loaded with special nerve fibers called C-fibers which are responsible for itch.
Itch is a mechanism to Read more »
*This blog post was originally published at The Dermatology Blog*
June 26th, 2010 by Jeffrey Benabio, M.D. in Better Health Network, Health Tips, True Stories
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While vacationing in Idaho and Montana last week (blissfully off the grid), I experienced something beautiful: altitude. At 6,260 feet Stanley, Idaho is a mile higher than my home in San Diego. The skies there were a brilliant blue. There was daylight well after 10PM. The mornings were a chilly 35 degrees. And I got sunburned.
How can this be? Montana is over 1,000 miles north of San Diego. Shouldn’t the sun be stronger down here? Read more »
*This blog post was originally published at The Dermatology Blog*
Have you ever had a sunburn? First it hurts. Then it itches. And itches. And itches.
