Feeling of phantom droplets on my arm and hand cramps

[Veronka17]

Hi everyone, I want to ask about these phantom splash/droplets I constantly feel on my arm, along with cramps on my right hand. I also realized that my vision become blurry suddenly when I drive, constant ringing on my ears, severe neck + back pain, fatigue, and insomnia. All this symptoms starting few days ago. Is it because of stress or something else? I'm a student and don't know what to do,if you know something about it please tell me. Thank you and have a good day everyone :)

[Raunak08]

This has happened to me a number of times over the years, the most recent being a couple of hours ago which has got me here. It's always the same I am indoors, its it is not raining, there is no sign of leak in the ceiling and for no apparent reason I feel a small drop of water on my skin.
Today it was three or four times on my hands arm but I have felt all over the body over the years. I feel it the most when I expect it or think of it .I have also felt it when my legs are under the table.
For more information you can read discussions section and significance section from this Evidence for the involvement of peripheral cold-sensitive TRPM8 channels in human cutaneous hygrosensation (https://journals.physiology.org/doi/full/10.1152/ajpregu.00332.2019)
Human skin wetness perception: psychophysical and neurophysiological bases (https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4843859/#!po=9.50920)