4. Dry Skin

Water is vital for keeping skin supple and moisturized. When the body is dehydrated, skin may appear dry, flaky, and less elastic. The skin might feel tight or itchy due to the lack of moisture, and in severe cases, cracks or fine lines may form. Using moisturizers can temporarily relieve dry skin, but long-term hydration from the inside is necessary to keep the skin healthy.

5. Headaches

Dehydration can lead to headaches, often resembling the symptoms of tension headaches or even migraines. The brain temporarily shrinks from fluid loss, causing it to pull away from the skull, leading to pain. This type of headache is frequently worsened by physical activity or heat exposure. Drinking water may alleviate or prevent dehydration-related headaches.

6. Dizziness and Lightheadedness

When the body lacks sufficient water, blood volume decreases, leading to lower blood pressure. This may cause lightheadedness or dizziness, especially when getting up fast. Dehydration also affects the balance of electrolytes in the body, further contributing to feelings of unsteadiness or confusion.

7. Decreased Urination

If you are not urinating as frequently as usual, it could be a sign that your body is trying to retain as much fluid as possible due to dehydration. Infrequent urination, especially when accompanied by dark urine, is a clear signal that you need to increase your water intake. A healthy adult typically urinates 6–8 times per day, and a significant drop in this frequency can indicate dehydration.