Signs of dehydration can vary from mild to severe and include: - Thirst: A primary indicator that the body needs more fluids. - Dry Skin: Skin may feel cool and clammy or appear flushed. - Fatigue: Dehydration can lead to a lack of energy and lethargy. - Dizziness: Low fluid levels can affect balance and coordination. - Confusion: Severe dehydration can lead to cognitive impairments, particularly in elderly patients.