Diffuse changes suggest that the brain is changed evenly, i.e. diffusively.
Similar phenomena occur in trauma, shock, some diseases (encephalitis, meningitis).
Diffuse changes in the brain: Symptoms, Diagnosis
Diffuse brain changes suggestshave the following characteristics: a malfunction, slow (especially when switching to another activity), impaired attention, psychological changes (self-reduction, narrowing of the range of interest). Such violations are detected according to the electroencephalogram (EEG). The human brain has a conditional normal electromagnetic activity. According to the results of EEG activity can be detected, which differs from the norm, and there are no serious pathology. In this case, the doctor wrote in the conclusion that the patient has diffuse changes of bioelectric activity of the brain. Such variations in the EEG are often observed in healthy people.
Sometimes, on the background of these changes are detectedsigns of dysfunction diencephalic-stem structures that supported the complaints of the patient on the variations in health. Often these changes are accompanied by dizziness, other discomfort. If diffuse changes are significant and there is a strong decrease in the seizure threshold, it means that a person has a predisposition to epilepsy.
If the cerebral cortex there are pockets of increased bioelectrical activity, a person can appear seizures.
Diffuse brain injury
Encephalitis, meningitis, arteriosclerosis, toxicBrain lesions are usually associated with inflammation, swelling, scarring, tissue necrosis. They suggest significant pathological changes in the EEG. In diffuse lesions of the brain on the EEG recorded the following pathological processes:
- The presence of polymorphic polyrhythmic activity in the absence of a dominant regular bioelectrical aktivnosti-
- Disruption of the normal organizationEEG lead to asymmetry, irregular bearing, together with the distribution of violations of fundamental rhythms EEG amplitude relationships Match wave phase in symmetrical divisions mozga-
- Diffuse pathological variations (delta, theta, alpha, which exceed the normal amplitude parameters).
The diagnosis of "diffuse lesion" is placed only in the presence of these three features, chief among which is the last one.
Often dominated by electroencephalogram diencephalic syndrome symptoms (symptom that appears due to destruction of structures hypothalamus and pituitary gland).
The consequence of head injuries, concussionsis diffuse axonal injury. EEC in this case is characterized by the changes which become resistant or brainstem or subcortical nature. The severity of the patient depends on the extent of axonal damage and the severity of secondary symptoms (edema, metabolic disorder), by joining other complications. Recovering patients who had diffuse axonal brain injury can take from several months to a year or more after the injury.