Hands go numb, tingle from trackpad

Danshap has some good advice. I have been a machinist for 10 years and just developed carpal tunnel syndrome. Using my MBA can trigger the same symptoms. The keyboard is a bit smaller, and might by just enough so that you flex your wrist a little more to use the trackpad.

I'm going to go to the apple store sometime this week and figure out if they have heard about this problem or see if I can put in a request to apple to jump in on this. It's getting to the point I can't even use my trackpad without discomfort.

That sounds interesting. My expectation is of course that they will have no clue.

Have you guys had any fairly recent multitouch apple product before this one? I'm thinking that this might be some common thing related to their, otherwise fairly good and unique, multitouch technology.

I''m just lucky right now that my macbook air is not my main computer in any way. I use it on average for about 1 houre each day. I don't think I could have used it full work days.

spoontee: I just want to clarify that it is commulative for me as well.

By the way, can you guys feel any difference depending on how many fingers you use at once? I'm sure that people use the trackpad in different ways. Some probably mostly have one finger on it while others have three a great deal of the time. (the thumb ready to click and then two other fingers to scroll and similar)

I found this by trying to figure out why my track pad feels so weird especially after touching one of the newer trackpads. they have this cold feeling to them, when they are new, I noticed once that cold to the touch feeling wears off they start to just give off this numbing sensation when i touch it.. even the whole laptop surface gives off this numbing feeling, and the fingers i use to touch the track pad, start to feel iritated, almost like the slow virbation of the computer is causing an electromagnatic allergic reaction or something.. if that even exhists lol. it sure does feel weird I thought about getting my trackpad replaced, if thats possible, I don't really know what the problem is its just something about the trackpad and touching it gives off this weird feeling and using for a few hours makes my finger tips just feel worn off and numb..

a possible solution is i think the trackpad glass is worn out, and perhaps has become difficult to slide on.. I think getting the glass buffed or cleaned really well might fix it, I really don't understand why there is such a different "cool" feeling when touching the new macbook pro trackpad than when using one from 2009..

they both look the same, but the newer one has this cool to the touch feeling even when its been turned on all day.. the old one just feels warm and "vibrating" very very subtle.

my service battery indicator is on, so I wonder if that could fix it.

crap finally figured out why my fingers hurt with a burning sensation. apple's trackpad (desktop and macbook) ntm all smart phones all use glass. which however finished is an uneven surface with micro sharp edges that will microcut the skin and its nerves over and again. The longer you use it, gliding over said glass, the more damaged your fingers get. #covertheglasspronto

There's no glass or electric shocks happening here. I felt something similar to this for a while until I realized that it's really just my finger tips getting sensetive to pressing the pad for 7+ hours a day.

The solution?

Just change your settings so that you only need to tap lightly on the pad to click things. this way you never press hard on the pad.

I've never had an issue with that since.

Try that and see if it helps.

I already adjusted the settings last month after the sensation started.

I'm telling you, whenever I lightly brush-glide my fingertips across the trackpad I still feel the sensation. And it's getting worse.

I'm looking into the trackpad protection.

The trackpad surface is glass, an insulator, and it's impossible for you to sense any voltage. On the other hand (oh, look out for the pun), if you come in contact with the metal case, and the power adapter is plugged into the computer, and the power adapter in connected to an AC outlet that hax not been properly grounded, you can feel a vibrating sensation. Use the 3-prong power cord plugged into a properly-grounded AC outlet, and the sensation will go away.

dodi7biker, I am having the exact same problem and it is super unpleasant, like nails on a chalkboard unpleasant. This may be a problem without a solution that doesn't involve an external keyboard and mouse

After posting on this thread a while back, the situation with my laptop become worse and worse to the point that my finger would swell up around the area that touched the trackpad.

My battery "check indicator was on" you know that notification at the top of screen that says "your battery may not function as intended but you can continue to use your computer normally, and to take it into apple whenever you feel like it."

So i didn't take it in, and eventually my battery expanded and expanded, to the point the track pad wouldn't even press down, all the while I went without noticing, and continued to use normally. I had gotten so used to being zapped while touching it during my 12+ hours of routine daily use, that I couldn't even tell anything was wrong.

Eventually I started to question why my middle finger on my right hand, was so swollen up.

Then the next day while I was on the computer I was using the track pad and I looked down and noticed, that my middle finger was the only finger I ever used to touch the trackpad. It was swollen and bleeding, and I had to constantly bandaid and tried various mediciations thinking it was caused by a food allergy when finally i made the discovery. I called apple care, and told them all of this information, At first I didn't even think it was my track pad, I thought it was perhaps my battery because it was expanded so big, but they kept reasuring me that I could purchase a new battery and nothing was wrong. When I first called apple care they didn't seem to care and kept saying I could purcahse a new battery. I called again the next day and insisited that I showed them pictures of my finger. They replaced my macbook pro, "motherboard, trackpad, battery, case top and bottom" and I'm pretty sure there is some deeper issue going on here they don't want anyone to know about. They never did tell me what was wrong with my computer, but were happy to replace it for me, my finger hasn't swollen up since. I use my trackpad just as much, but I'm worried it can happen again, perhaps in a couple years when the trackpad wears down.

@Thailand Amulets
Im really lookin forward to read about your tests and what your docors and maybe court says.

Sadly i dont have the money needed to go to a specialist doctor or even to try and sue apple..

If you have any news about this. just post here. i folow whis forum.

@ElRojito

i dont think apple is gonna respond to a usercase, when their product stands out in a negative way they will stay silent.

- what country do you live in?

Switzerland..

- What kind of current and/or converter are you using for your Macbook:

original 85watt one.. it came with the laptop...

The relatively simple solution for me was to buy stickered covers for both the macbook and normal trackpads. Do it sooner than later. At this point I'm still not sure if it's battery or the glass itself. The trackpad are made of glass, and since glass doesn't normally conduct electricity, my alternative suspicion is that over time the glass isn't resistant enough to scratches which over time causes microabrastions to the finger. Thus I welcome Apple's recent trend toward sapphire with interest. I suspect they are aware of this long standing problem and are taking steps and investments to address that first with iPhones, which I also bought plastic sheet cover stickers for

Anyway now my tingling sensation is subsiding; I put up with it for 8 months so your results may vary based on your usage intensity

I have the same "problem" the tingling sensation. However, it goes away if I unplug it. But it doesn't happen everywhere, it depends upon where (office 1, office 2, home) I plug it in, and office 2 is the worst. It must be electrical.

Has anyone else had their fiingers swelling up and getting tiny rashes and or cuts on the insides of first and second bends on their right hand middle finger. I also noticed a very tingleing sensation when resting my hand on the laptop, almost an electrical feeling when touching the computer with the plams of my hands only when the laptop is plugged in these sensations occur while touching both the left and right sides near the lower part of the speakers. Sometimes it occurs the most when I can feel the harddrive spinning inside my computer while playing a game or a high performace software. I have the newest style of electical cord. But it feels like a very small electical shock is occuring. As far as the rashes, on my finger, I first suspected electical shock that was causing irritation to my middle finger while using the track pad, but like you say it is made of glass, which does not conduct electricity. The glass having small scratches in it that could cause my finger tips to become numb or sore also happens and that would explain the finger tips but the rashes further up on my middle finger make me suspect that a small amount of radiation is occuring or other allergic or senestivity while toching the trackpad. It only occurs on my middle finger. Orignally When I showed the pictures of my swollen finger to apple, and sent pictures of my very swollen battery that was expanding the case making it impossible to click with the track pad, they replaced my my mother board track pad, and case, they did not tell me what the problem was that caused my hand to become hurt, but orignally ensured me that the battery was not leaking and that it was not caused by the battery. My apple support advisor sent the pictures to the enginnering team and she replied saying that they would cover the repair of my computer. The whole phone call started when I assumed it was the battery leaking that caused my injury, and they were insisting that the battery could not leak, and they were going to just charge me for a new battery, I kept insiting that the injury was caused by the computer and eventually they agreed, and I didn't have to pay for the battery or for the replacement of the other parts, that I suspect were the real problem. I don't know what makes up the trackpad, is it Mercury, or what causes the trackpad to register a click, I assume that part is the problem. Either way, with the laptop I have now that was repaired, I can still feel the same electrical shock.. My finger hasn't swollen since, but I assume If i use it regularly there is a chance of it happening again. Apple is aware of whatever orignally caused the injury to my finger, but they wouldn't tell me what "the problem was" however I was happy to have my computer replaced so I didn't take it any further..

Just a warning to watch out for rashes or swelling on your middle finger that you use the track pad with, I know there is something wrong with these models that cause it, and if i continued to use it who knows how bad my finger would have gotten, I used it for quite a while and noticed one day my finger became very very sore and I was using my computer and relaised hey the soreness is just on one finger, and I was having a hard time evening using the trackpad, I finally called apple realizing this and it suddently all made sense.