Sudden hot and dry spells that disappear after a few minutes may be due to menopausal syndrome, autonomic dysfunction, hyperthyroidism, and so on. 1. Menopause syndrome: During menopause, due to fluctuation or decrease of estrogen level, female patients have symptoms related to vasodilatation and contraction, which are mainly manifested as a bout of hot and sweaty, and disappear naturally after a few minutes. 2. Autonomic dysfunction: Autonomic dysfunction is a group of syndromes caused by prolonged mental tension, mental stimulation, and excessive psychological pressure or anger. Clinical manifestations include chest tightness, breathlessness, and a burst of heatiness and sweating, which will disappear after a few minutes. 3. Hyperthyroidism: caused by excessive production of thyroid hormone by the thyroid gland itself, which leads to accelerated metabolic activity, clinical symptoms may appear a burst of hot and dry, after a few minutes will disappear naturally. This symptom alone is not enough to diagnose the disease and may be caused by other factors. It is recommended that the patient consult a doctor in a timely manner to clarify the cause of the disease and provide targeted treatment.