I had that exact sensation (water dripping down a part of my leg) one day in the backyard of someone's house. I thought I was sweating as it was hot that day and I was wearing jeans. Next night I saw the bite in that spot which started all my symptoms: fatigue, headaches, night sweats, chills with a general malaise feeling, itchy bumps and rashes, tingling and burning in my legs, heavy legs, etc. Turns out I have Lyme disease.