Obstructive sleep apnea syndrome Clinical symptoms * Loud and uneven snoring * “Breath-holding” (apnea) during sleep or repeatedly waking up during the night * Abnormal movements during sleep or restless sleep at night, involuntary tossing and turning, or even coma convulsions * Easy fatigue and drowsiness during the day, or even falling asleep at work or while driving * Lethargy, dizziness and headache after waking up, and feeling of taste * Obesity * Irritability and irritability, higher blood pressure in the morning * Poor concentration or memory loss, personality changes * Decreased male sexual function * Enuresis or increased nocturia