Probably not serious: Dehydration is very common. Signs of dehydration include feeling thirty, dry mouth, poor skin tone, light-headedness, decreased urination. More severe dehydration may cause headache, stomach pain, and/or passing out. Drink lots of water. Try to keep yourself well hydrated by never allowing yourself to feel thirsty. If the blue veins are no longer visible, then it probably is dehydration.
Answered 4/14/2018
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