I just found this thread in a desperate search for help after dealing with burning, stinging, fingertips and palms when using my
iphone. It stings me hold it and I have small hard, tiny bumps on my right
thumb where I click the home button and swipe on the surface! it feels like I burned myself. The bumps sting and burn and I don't have any sensation on those areas of my thumb. WTF. This has happened twice this week after using my phone for about an hour.