Signs and Symptoms of Dehydration

Dehydration can affect anyone at anytime. It can manifest after you've been exercising or even during periods of inactivity. There are many causes of dehydration including malnutrition, diarrhea, vomiting, blood loss, and simply not replenishing fluids lost from urination and sweating. Fever from disease or illness can also trigger dehydration, which is why it's important to drink plenty of liquids when you're sick.

Dehydration begins with increased thirst and can quickly progress until it becomes a life-threatening emergency.

When your body loses about 2 percent of its fluids, the following symptoms often present themselves:

When the body loses 5 percent of its fluids, you may experience the following symptoms:

A 10 percent fluid loss is a medical emergency. At this level, dehydration is often fatal. Acute symptoms include: