Monday, December 13, 2010
Perspiration or sweating regulates body temperature: evaporation causes a cooling effect on the skin. Its excess (excessive sweating or hyperhidrosis) may however be distracting especially in social relations. Hyperhidrosis may be generalized to the entire body surface area or certain areas (palms, soles, armpits, face).
The smell is due to proliferation of bacteria.
The major cause of hyperhidrosis is localized stress and emotions. The mechanism is unclear.
It is promoted by obesity and there is a hereditary factor.
In the generalized forms, the causes are numerous and must be removed prior to label idiopathic (no cause):
Some are well-known and obvious diagnosis: fever, hot flashes of menopause, alcohol, alcohol withdrawal or drug.
-Others are less frequent and yet, at the forefront certain medications (anti-inflammatory drugs, aspirin, progestins, thyroid hormones, antidepressants, interferons, derivatives of vitamin A, etc. ....)
-Quote other possible causes (the list is not exhaustive):
Diabetes, hypoglycemia, hyperthyroidism, pheochromocytoma, acromegaly, Congestive heart failure, Prinzmetal angina, Tuberculosis, Brucellosis, carcinoid tumors, lymphoma (Hodgkin), systemic diseases, various neurological damage, etc. ...
* Vertebrobasilar syndrome: it is due to compression of the vertebral arteries (which feed the cerebellum, the center of balance) by osteoarthritis cervical spine. The dizziness lasts a few seconds during certain movements (rotation or bending the head backward).
* Migraine accompanied by vertigo precedes the headache especially in children.
* A stroke in the brainstem or cerebellum
* Atherosclerosis of cerebral arteries, carotid, vertebral.
* Multiple sclerosis: often associated with other neurological earlier.
* Brain tumors benign or malignant.
Also include other causes:
* Syndrome concussional dizziness occurring after a previous accident, examinations are negative. There are often claims forensic associates.
* Dizziness toxic: alcohol, antibiotics (aminoglycosides, tetracycline), aspirin, anti-inflammatories, etc. ...
* The barotrauma (pressure differential): diving accident aircraft.
* The acoustic trauma (loud noise and violent)
* Vertigo functional: you can not find any cause, the patient catches his balance by crossing the legs. This is within the scope of personality disorders like hypochondriac.
True vertigo, as opposed to true vertigo (sensation of instability or simple balance problems), is defined as a false sensation of movement in 3 planes of space.
The causes are many, some benign, others more serious.
The origin of the disorder may be at different stages of the regulation of balance: the brain and especially the cerebellum, one speaks of central origin, or in the organs of motion analysis (inner ear consists labyrinth and semicircular canals) and transmission paths to the brain (vestibular nerve mainly), it is called peripheral origin.
The main causes peripheral
* Benin paroxysmal positional vertigo: it occurs in a certain position, turning in bed for example, it takes 2-3 weeks and disappears.
* Meniere's Disease: it is manifested by attacks of vertigo large (often almost impossible to stand) with malaise, vomiting, tinnitus and deafness (bass sound in the ear) on one side. Not serious, it becomes very annoying if seizures are reconciled.
* Otosclerosis: hereditary disease with hearing loss.
* Acute and chronic ear infections may be sufficient to trigger dizziness. Similarly to the banal earwax.
* Labyrinthitis: involvement of the labyrinth, the organ of the inner ear, shows a spread of the infection following acute or chronic otitis. Risk of meningitis.
* Cholesteatoma: following chronic otitis, developing a kind of tumor that will gradually destroy the eardrum and inner ear.
* Vestibular neuritis : vestibular nerve by a virus, dizziness lasts a few days to 3 weeks.
* Fractured rock: the rock is a bone of the skull behind the pinna. His fracture that may cause the maze.
* Acoustic neuroma: a benign tumor of gradual evolution, in addition to the dizziness he is gradually developing deafness on one side.