What causes the sensation of having a water droplet hit your arm or sometimes other areas when you are outside or more specifically indoors?

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I hope I’m not the only person that has had this happen to them. It’s always bothered me and I figured we could learn together!

In: Biology

Not sure what you’re asking.

Are you wanting to know how your body sends signals of touch to your brain? Or are you saying that you feel water droplets hitting you when there isn’t an actual droplet, and you want to know why?

If it’s the latter, I’m guessing there actually was a water droplet just so tiny you didn’t see it.