Thirst

Thirst is an intense desire to drink liquids. It can be caused by dehydration, illness, or certain medications. It can also be a sign of an underlying medical condition. Symptoms of thirst include feeling dry in the mouth, feeling weak, and having a headache. It can also lead to dizziness, fatigue, and confusion. As the condition progresses, the person may experience darker urine, dry skin, and a decrease in urine output.