Cold sweat, dizziness and nausea all over the body may be related to physiological factors, and may also be caused by hypoglycemia, postural hypotension, benign paroxysmal positional vertigo and so on. 1. Physiological factors: If you stay for a long time in a crowded and poorly ventilated environment, it is easy to cause hypoxia, which may show cold sweat, dizziness and nausea all over the body. 2. Pathological factors (1) Hypoglycemia: When hypoglycemia occurs, the body’s blood glucose content is too low to provide sufficient energy to the tissues and organs of the body, which may cause cold sweat, dizziness and nausea. (2) Postural hypotension: It is usually due to a sudden and rapid rise from a squatting or lying position, which leads to the inability of the blood in the whole body to redistribute in time and easily induces postural hypotension, which may cause cold sweat, dizziness, and nausea in the whole body. (3) Benign paroxysmal positional vertigo: Vertigo is easy to appear when the position of the patient’s head changes, such as when getting up or lying down, and is usually accompanied by nausea, vomiting, sweating and other symptoms. Cold sweat, dizziness and nausea may also be caused by other reasons, it is recommended to consult a doctor as soon as possible to clarify the cause, and then give targeted treatment.