“Doctor! I feel dizzy!” As long as people feel uncomfortable, they will tell the doctor, “dizziness”. In fact, there are many kinds of dizziness, and the common symptoms are: the feeling of fainting, lightheadedness, unsteadiness, spinning, and confusion. Most people often express other discomfort as dizziness, such as headache, fatigue, nausea, tinnitus, blurred vision, weakness of limbs, etc.
◎ the causes of dizziness can be roughly divided into:
● ear nose throat system
Carsickness or seasickness is caused by the inability of the balance system of the inner ear to adapt to rapid changes in the outside world, which will improve within a few hours.
Dizziness before and after a cold is the deterioration of the balance function of the vestibule and eustachian tube, which will be aggravated when the head rotates and can be relieved within a few days. If it is accompanied by hearing loss, or long-term tinnitus, headache or earache that gradually intensifies, seek medical attention immediately.
● vision system
If there is a problem with eyesight, such as wearing glasses that are not of the right degree, it will cause dizziness. There is a problem with the eye muscles, and the eyeballs can’t rotate as usual, resulting in wrong focus and dizziness.
Dizziness of the visual system will improve after closing the eyes. If a part of the visual field is missing, or vision rapidly deteriorates, it may be a problem with the retina or optic nerve, which should be examined immediately.
● nervous system
Transient cerebral ischemia can cause dizziness. If there is a sudden change of consciousness, drooping eyelids, crooked corners of the mouth, unclear speech, and weakness of one side of the body, it may be a stroke, and you must go to the emergency room immediately.
Dizziness after head injury should be noted: there is no abnormality in the initial stage of brain injury, but it may progress to intracranial hemorrhage after several days to weeks. In addition, if dizziness is accompanied by neck stiffness and fever, meningitis must be suspected.
● cardiovascular system
Poor heart or vascular function, high or low blood pressure can cause dizziness. In particular, patients with long-term hypertension, diabetes and hyperlipidemia are prone to postural hypotension and dizziness if they suddenly sit up or stand up.
Serious cardiovascular problems, such as dizziness accompanied by chest pain, wheezing and cold sweat, may be myocardial hypoxia; Unstable heartbeat (irregular heart rhythm) causes unstable blood supply and dizziness. Patients may feel palpitation or severe chest discomfort, and they should seek medical treatment as soon as possible.