Hot laptop causes injury

Discussion in 'General Mac Discussion' started by JohnStrass, Jul 3, 2004.

  1. JohnStrass macrumors regular

    Jul 17, 2002
    Miami, USA
    Well, its for real. The heat put out in some laptops causes long-lasting thermal injury to the skin , called "erythema ab igne", similar to a slow roast of the legs from space-heaters.

    Erythema ab igne induced by a laptop computer
    Journal of the American Academy of Dermatology
    June 2004 • Volume 50 • Number 6

    I use some sort of insulator like a pillow between my legs and my toasty PBG4 1.5 15".
  2. King Cobra macrumors 603

    Mar 2, 2002
    The cause of that could of been from any portable computer from various levels of usage. And anyone that keeps their portable computer on themselves while it's burning hot has to be seriously braindead. [​IMG]
  3. goodknight411 macrumors member

    Jun 14, 2004
    MiddlaNowhere, Arkansas
    Looks like a sunburn that's gonna peel, or those sun-spots some people get. Must have been a significant amount of heat to do that. (or mabey he's jut weird)
  4. Applespider macrumors G4


    Jan 20, 2004
    looking through rose-tinted spectacles...
    Not so sure that a pillow is the best solution since it's so soft that it's not going to help the PB dissipate heat and might actually hinder it.

    A laptray or something with a solid surface is probably better.
  5. abc123 macrumors 6502

    Apr 26, 2004
    oh god, i just saw the upper thigh of a 50 year old man
  6. mkrishnan Moderator emeritus


    Jan 9, 2004
    Grand Rapids, MI, USA
    LOL :), but that's exactly the thing. :( From the article, this condition results from sub-burning-hot exposure. He even stopped using it because he "experienced discomfort." OTOH I'm pretty sure this amounts to a "rash" that will "go away" if you "ignore it" for a week or so. ;)
  7. Versello macrumors regular

    Nov 13, 2003
    A similar case was in the news last year with a scientist who was rendered sterile because of a hot laptop... which btw is why they call them notebooks.
  8. virividox macrumors 601


    Aug 19, 2003
    Manila - Nottingham - Philadelphia - Santa Barbar
    u would think if it was hot people would stop using it
  9. stoid macrumors 601


    Feb 17, 2002
    So long, and thanks for all the fish!
    To some extent, it's like the frog and boiling water. If you through a frog in boiling water he'll immediately jump out. But if you put a frog in cool water and slowly bring it to a boil, it won't recognize the heat change and it'll be boiled alive.

    I don't think that the burns happen after a few minutes of use, but rather they occur after prolonged use, probably hours a day over weeks or months.
  10. KingSleaze macrumors 6502

    Feb 24, 2004
    So. Cal
    Using a pillow is a bad idea. The manual that came with mine said not to use it on a soft surface. It needs the small space beneath it for heat dissapation. I use a folding desk made of hard plastic.Don't want to fry my book.
  11. jtown macrumors 6502

    Jul 3, 2003
    That's actually false but the concept has some merit in this context. I've had personal experience with accidentally cooking part of my body over an extended period without noticing. I'd just picked up my "pre-owned" touring motorcycle and took off on a 750 mile trip. Got to my destination, hopped in the shower, and noticed the beginning of a big bruise on the inside of my right knee. Turns out the duct that was supposed to guide the hot air out the vents in the fairing was slightly out of place and it let a small stream of hot engine air blast my knee all day. The flesh had begun to cook and I didn't notice a thing until I happened to look at my knee.
  12. NusuniAdmin macrumors 6502a


    Nov 19, 2003
    *sticks his hand in boiling water...*
    Wow this is hot...oh well

    *begins burning*
    cool....the water is turning red! Hmmm my hand is bleeding...

    *sues the company that made his gas stove*
    What...its alowed to do this....

    *wins lots of money*

    That just about follows the same logic as putting a hot laptop on your lap.....that is why they are called "notebooks" nowadays :D (as well as the point they are replacing regular notebooks...)
  13. topicolo macrumors 68000


    Jun 4, 2002
    Ottawa, ON
    Did you guys notice the line that said "Rare cases of squamous cell carcinoma (SCC) and Merkel cell carcinoma arising in lesions of EAI have been reported.17-19 Thermally induced cancers are usually SCCs and occur even after 30 years.20,21"

    The infrared radiation from the laptop could give you cancer!
  14. JohnStrass thread starter macrumors regular

    Jul 17, 2002
    Miami, USA
    Its more common than you think

    Yes, no more pillows; a hard tray is a better idea.

    Erythema ab igne is a real disease. It is due to low-dose intermitent exposure to heat. The most common is for people in the winter to sit next to a fireplace or quartz heater and feel the nice warmth. The risk of skin cancer is real and I follow up closely with my patients with EAI.
    I never had one of the hotter PB (I cant remeber which ones were the hottest) but it might be safer to have one burn you, so that you keep it off of your legs, rather than deal with the low-level heat.
  15. wdlove macrumors P6


    Oct 20, 2002
    Good article hopefully laptop users take heed and use hard surface protection between them and the notebook. I agree with not using a pillow or something soft it would give support to the notebook or allow for heat dissipation.
  16. silentrage macrumors member

    Jan 15, 2004
    the South

    I have an iLap stand that can be used while sitting or on a desk. It allows air to flow under my laptop while I'm sitting and puts it an angle that easy to type and read.
  17. Peter9 macrumors member

    Jun 26, 2004
    sort of ironic they call it a LAPtop then :rolleyes:
  18. MacFan26 macrumors 65816


    Jan 8, 2003
    San Francisco, California
    Is there anything that doesn't cause cancer these days?
  19. King Cobra macrumors 603

    Mar 2, 2002
    Apple calls it a Powerbook. :D Or a portable.
  20. topicolo macrumors 68000


    Jun 4, 2002
    Ottawa, ON
    Hey cool, you're a dermatologist then John? Is dermatology as great a residency as everyone makes it out to be?

    Just curious
  21. fingers macrumors regular


    Jan 16, 2004
    Me too

    Fantastic device - keeps my powerbook cool when recording audio too - so no more pesky fan noises on my recordings!

    It also raises the powerbook off my desk which is alot better ergonomically too.
  22. micsaund macrumors 6502


    May 31, 2004
    Colorado, USA
    That iLap looks very interesting -- quite a shocker on the $60 price though. Perhaps I'll try to roll-my-own and see how it turns-out. I've also got a couple of the cheap plastic "laptop coolers" that cost about $10 each and have USB-port power fans in them. Even if not using the fans, the hard plastic base works on your lap/desk and provides additional airflow.

Share This Page