пятница, 14 мая 2010 г.

Dizziness

Under dizziness understand the illusory motion ( “hallucination of motion”) fixed the environment in any plane, or a sense of movement of its own body as a result of mismatch of information to the central nervous system from the vestibular, visual and haptic (tactile) sensory systems. When vertigo disrupt the balance – man’s ability to maintain a stable position at rest and while performing different movements.
Dizziness is divided into the vestibular (systemic) and nevestibulyarnoe (non-system).

System dizziness associated with ENT-pathology and is characterized by three main options:

  1. sense of passive movement of the body in space (proprioceptive dizziness);
  2. sense of movement of support under the feet or hands, provalivaniya or rocking of the body, unsteadiness of the soil (tactile vertigo);
  3. sense of forward movement of objects visible environment (visual vertigo).

System dizziness is often combined with hearing loss and other ENT diseases and its duration is typically less than 6 hours.

All other sensations (drunkenness, vomiting, nausea, motion sickness, presyncope, momentary blackouts, a veil or darkening of the eyes, movement or stirring of the head, instability, and stagger when walking, etc.) are nevestibulyarnymi (nonsystematic). They are rarely combined with ENT-pathology and more time-consuming. The most frequent causes of non-system of dizziness:

  1. Lack of circulation in the vertebral-basilar system. It occurs commonly in patients with atherosclerosis, thrombosis, hypertension, disorders of the cervical spine (the most frequent variant, which reduces blood flow in the vertebral arteries as due to strains, subluxations, turning themselves cervical vertebrae, and due to compression of the neck muscles and blood vessels scar-affected tissue, as well as by reflex spasm of blood vessels).
  2. Psycho-autonomic syndromes. As the pain, fear and sadness, dizziness, fall within the subjective experience that is emphasized in the definition of vertigo as a “hallucination of motion”. Dizziness is noted in 79% of patients with hypochondriacal syndrome and 80% of patients with hysterical neurosis, and vestibular hallucinations almost indistinguishable from the system of dizziness, although they are usually more autonomic and neurotic symptoms.
  3. Migraine often (in 72% of cases) is accompanied by dizziness, and in 30% of cases – by the system.
  4. Fainting during dehydration, oxygen deficiency, low blood sugar, trauma accompanied by vertigo and its equivalents (faintness, nausea, flashing “fly” before the eyes, intoxication, ringing in the ears, etc.). Fainting can also be neurogenic, including the sudden change in body position, and in some diseases of the heart.

It is not uncommon for a combination of different causes of dizziness in one person, that could interfere with treatment.

Algorithm tactics surveys for dizziness

  1. Transcranial Doppler (study of blood flow velocity in vessels of the neck and head).
  2. Consultation ENT doctor.
  3. Clinical analysis of blood hematocrit and blood coagulation and blood sugar on an empty stomach.
  4. Ultrasound of the heart and ECG.
  5. Psychological Diagnosis

1 комментарий:

  1. Thanks for the advice.I used to get dizzy alot back in 1987,when I was 20 years old.I used to walk and I used to feel the buildings were going to fall on my.I think it was either my nerves or my back at the time.

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