I had a pretty bad sunburn not too long ago, I think the back of my neck got the worst of it because sores also came with it. I didn't change the kind of shirt I wore until well after it. I did work landscaping that day..so I don't know if it was a kind of plant that may have done it, but I'm sure I would have had it elsewhere, which I don't.
Now to describe the bumps.. they don't hurt anymore, but when they did it was only when they were touched. They don't hurt anymore really, but if I play with it much they bleed, maybe 5-6 in a small bunch there on my neck, right where my hairline is on the back of my neck. They are almost like blisters, but not clear and white at top, no coloration really. Also they dont actually itch much.
Can someone tell me what it might be, from what I've described? Maybe you need more info - ask away. I just want to figure out what it is and maybe how to get them off.
I would certainly see a doctor if they don't go away within a reasonable amount of time, but from what you've described, it sounds like sunburn blisters. I've had them before and they usually start to peel in a few days. You need to be using a good sunscreen (and lots of it) when you're working outdoors. It's important to re-apply it as you sweat it off. It'll sure save you some pain. Hope this helps.
Sounds like it could be sun poison which is very similar to what has been mentioned. Extra sun screen prevents it in most cases but to help you rid of it now, aloe works well but Gold Bond powders are super for it.