June 5th, 2012
12:33 PM ET

Chronic sun exposure damages trucker's skin through glass

The striking photograph of a 69 year old truck driver in a recent New England Journal of Medicine article shows just how damaging the sun can be to your skin.

While driving a delivery truck for the last 28 years, the driver was exposed to ultraviolet A rays through the window glass on just the left side of his face. The rays penetrated the epidermis and the dermis, the first and second layers of the skin, causing a condition called unilateral dermatoheliosis.

Dermatoheliosis, also called photoaging, refers to changes in your skin due to chronic exposure to UVA and UVB rays. The result is a gradual thickening and deep wrinkling of the skin.

According to the American Cancer Society (ACS), there are three main types of ultraviolet radiation. UVA rays can cause cells to age and damage the skin's DNA. They are linked to long term damage like wrinkles and can lead to some skin cancers.

UVB rays are the main cause of sunburns and are believed to cause most skin cancer. UVC rays are not present in sunlight and and not typically linked to skin cancer.

The Skin Cancer Foundation says UVA rays are less intense than UVB rays and up to 50 times more prevalent. They also penetrate the skin more deeply and are a major factor in skin aging and wrinkling.

The foundation's website says, "UVA is the dominant tanning ray, and we now know that tanning, whether outdoors or in a salon, causes cumulative damage over time. A tan results from injury to the skin's DNA; the skin darkens in an imperfect attempt to prevent further DNA damage. These imperfections, or mutations, can lead to skin cancer."

But, the foundation says, "UVB rays do not significantly penetrate glass."

Dr. Martin Weinstock, a professor of Dermatology at Brown University, and Chair of the American Cancer Society's skin cancer advisory committee, says UVB rays don't come through car windows unless they are open, and that even though you can get UVA rays through a closed window, the average person should not be overly concerned.

"In general there is not a huge amount of concern in people inside a car with the windows shut."

Weinstock's advice to consumers is to use a broad spectrum sun screen that protects against both UVA and UVB rays.  "Using sunscreen SPF 30 or greater is the simplest bottom line.  You gotta apply it whenever you're out for maximum protection.  You just have to apply it consistently and you have to reapply periodically, every few hours."

The ACS also recommends protecting yourself from UV rays by covering up, wearing a hat and sunglasses to block the rays and by limiting direct sun exposure in the middle of the day.  UV rays are usually strongest between 10 a.m. and 4 p.m.

soundoff (112 Responses)
  1. pharmaceptica

    tadalafil liquid https://pharmaceptica.com/

    June 19, 2021 at 20:39 | Report abuse | Reply
  2. pharmaceptica

    chlorowuine https://pharmaceptica.com/

    June 20, 2021 at 00:58 | Report abuse | Reply
  3. 스포츠토토

    84759 499809Thank you for sharing with us, I conceive this web site genuinely stands out : D. 213974

    June 20, 2021 at 07:16 | Report abuse | Reply
  4. pharmaceptica.com

    what is chloroquine https://www.pharmaceptica.com/

    June 21, 2021 at 03:09 | Report abuse | Reply
  5. pharmacepticacom

    sildenafil generic without a prescription https://www.pharmaceptica.com/

    June 22, 2021 at 05:10 | Report abuse | Reply
  6. pharmacepticacom

    where can i get hydroxychloroquine https://www.pharmaceptica.com/

    June 23, 2021 at 02:06 | Report abuse | Reply
  7. pharmacepticacom

    tadalafil research powder https://pharmaceptica.com/

    June 23, 2021 at 22:36 | Report abuse | Reply
  8. Jeffrey Sliffe

    Great articles. Thank you for the information spanish course free


    June 25, 2021 at 13:53 | Report abuse | Reply
  9. pharmaceptica.com

    tadalafil pah https://pharmaceptica.com/

    June 27, 2021 at 08:16 | Report abuse | Reply
  10. pharmaceptica

    hydroxychlor side effects https://www.pharmaceptica.com/

    June 28, 2021 at 10:44 | Report abuse | Reply
  11. pharmacepticacom

    chloroquine malaria https://www.pharmaceptica.com/

    June 29, 2021 at 09:33 | Report abuse | Reply
  12. pharmaceptica.com

    hydrochlorique https://pharmaceptica.com/

    June 30, 2021 at 08:25 | Report abuse | Reply
1 2 3

Post a comment


CNN welcomes a lively and courteous discussion as long as you follow the Rules of Conduct set forth in our Terms of Service. Comments are not pre-screened before they post. You agree that anything you post may be used, along with your name and profile picture, in accordance with our Privacy Policy and the license you have granted pursuant to our Terms of Service.

About this blog

Get a behind-the-scenes look at the latest stories from CNN Chief Medical Correspondent, Dr. Sanjay Gupta, Senior Medical Correspondent Elizabeth Cohen and the CNN Medical Unit producers. They'll share news and views on health and medical trends - info that will help you take better care of yourself and the people you love.