Fainting, a temporary loss of consciousness, occurs when blood flow to the brain suddenly decreases, leading to oxygen deprivation. Individuals may experience dizziness, lightheadedness, sweating, cold sensations, nausea, or vision changes before fainting. If fainting is accompanied by seizures or confusion, it may indicate conditions like epilepsy or a brain tumor.

Heat exhaustion results from prolonged exposure to high temperatures coupled with dehydration. According to WebMD, untreated heat exhaustion can progress to heatstroke, digestive issues, and mild neurological disorders. Symptoms often include dizziness, nausea, confusion, excessive sweating, extreme thirst, headache, and muscle cramps.

Insufficient hydration can contribute to heat exhaustion. *Bach Duong*

Peripheral vestibular disorder stems from issues with brain nerves, such as cerebral ischemia or cerebral infarction, which can obstruct and damage the brainstem—the region responsible for balance control. Brain tumors can also cause dizziness and headache by compressing and destroying vestibular signal processing centers or affecting nerve pathways, leading to dizziness and nausea.

Vestibular migraine affects the body's balance system. This neurological disorder causes a spinning sensation or dizziness that can last from a few minutes to several hours. Associated symptoms include sweating, dry mouth, numbness, and blurred vision.

Common triggers for vestibular migraine include specific allergenic foods, fatigue, serotonin imbalance, hormonal changes due to menopause or menstruation, and unusual weather shifts.

Anxiety and stress are also causes of sweating and dizziness. According to Very Well Health, anxiety triggers the release of hormones like cortisol and adrenaline. These hormones can affect the vestibular, cardiovascular, and respiratory systems, leading to narrowed blood vessels, an increased heart rate, rapid breathing, and dizziness.

Anxiety can manifest as sudden, intense panic attacks lasting several minutes, characterized by fear or severe discomfort. Symptoms may include a rapid heart rate, sweating, dizziness, weakness, chills, trembling, numbness or tingling in the hands, loss of balance, and nausea. Dizziness and a spinning sensation often become more pronounced with changes in posture.

If you experience persistent or abnormal dizziness and sweating, seek medical consultation to determine the underlying cause and receive timely intervention to prevent severe complications.

*Anh Chi* (Compiled)