What are symptoms and cause of dehydration?

thanksWhat are symptoms and cause of dehydration?
symptoms-
headache
nausea/vomitting
drowsiness
fair-haired or very red skin
disorientation
thirst
generalyl feeling unwell
when skin is pinched on the put money on of the hand it stays adjectives rather than returning to its middle-of-the-road shape.
causes-
not enough dampen intake or to much fluid lose through-
vomitting/diaherreoa
exercise
being the hot light of day
beign the sun
spending to long in a sauna
Your pee is outstandingly concentrated and very pale and it will smell bad. You wont sweat. And your specific gravity will be at its extreme
you will lose the elasticity of skin, thirsty, dizy, lazy and cramping surrounded by some cases when you have lot of electrolyte loss also.
drink gatorade and/or river