As practice shows, cerebral circulatory disorders occur accompanied by vascular diseases, mainly atherosclerosis. This disorder also appears against the background of increased blood pressure.
Violation of cerebral circulation in children develops, as a rule, due to the failure of the cervical spine.
Proteins, cholesterol and other fats circulate inblood and form a fat-protein complex. The organism perceives them as autoantigens in case of their qualitative change. In this case, the development of antibodies and biologically active substances (histamine, serotonin) occurs, and the walls of the vessels are affected. This, in turn, provokes an increase in their permeability accompanied by disturbances in metabolic processes.
Violation of cerebral circulation also occurs with neuropsychic disorders, lack of mobility, vasomotor dystonia, and also with the use of high-calorie food.
With prolonged overexcitation in the cortex of the cerebral hemispheres, the hypothalamic-pituitary-adrenal system becomes overexcited.
The clinical picture accompanyingAtherosclerotic disturbance of cerebral circulation is manifested in a decrease in working capacity, sleep disturbance, headaches, irritability, noise in the head. In addition, paradoxical conditions are noted, memory loss, worsening of hearing, violation of attention.
Hypertensive disease can provokethe emergence of stagnant foci of excitation, extending to the hypothalamic region. As a result, there is a disruption in the regulation of the vascular tone. This condition, in turn, causes a violation of the electrolyte balance, an increase in the release of aldosterone, an increase in the sympathetic-adrenal system. As a result, hyperreactivity of blood vessels and increased blood pressure develop. The course of the disease provokes a change in the type of circulation. This is manifested in a reduction in cardiac output and an increase in peripheral vascular resistance.
One of the clinical forms characterizing the violation of cerebral circulation, include the primary manifestations of insufficient blood supply to the brain.
The diagnosis is made taking into account complaintspatients on memory loss, dizziness, sleep disturbance, disability, tinnitus. The combined manifestation of two or more symptoms, especially in cases of their long existence and frequent repetition, give grounds for establishing a diagnosis. Organic lesions of the nervous system are not noted.
Hypertension and atherosclerotic vascular lesions often cause an impaired cerebral circulation. The clinical picture can be manifested by various symptoms.
Symptomatic symptoms include dizziness,pain in the head and eyeballs, worse when they move, vomiting, nausea, stuffiness and tinnitus. In a number of cases, there is a change in consciousness, manifested in psychomotor agitation, stunning, loss of consciousness. In rare cases, convulsive conditions are noted.
The manifestation of focal symptoms depends on the arealocalization. If there are disorders in the circulation of the cerebral hemispheres, as a rule, a disturbance occurs in the sensitive zone. It can be manifested by numbness or tingling, which most often seizes certain parts of the limbs, skin or face. There may be a decrease in pain sensitivity.
Sensitive disorders can be accompanied by a disorder of movement. They appear as limited paresis or paralysis. In a number of cases, there are also arriving speech disorders, body circuits.
Lesions in the brainstem can provoke unsteadiness of gait, double vision, coordination disorder and so on.
