Night sweats are a common symptom where individuals wake up drenched in sweat, disrupting sleep and leading to fatigue. Unlike regular sweating, night sweats may indicate underlying health issues. Key causes include infections such as tuberculosis, hormonal changes during menopause, and certain cancers like lymphoma and leukemia. Hyperthyroidism, characterized by an overactive thyroid, can also lead to excessive sweating. Mental health conditions, including anxiety and stress, can trigger night sweats through the body's 'fight or flight' response. Additionally, low blood sugar levels in individuals with diabetes and conditions like gastroesophageal reflux disease (GERD) or sleep apnea can contribute to nighttime sweating. Identifying the underlying cause is crucial for effective management, and individuals experiencing persistent night sweats should consult a healthcare professional for proper evaluation and treatment.