Many reasons, from simple physiological changes to serious life-threatening diseases, can affect brain blood flow and lead to fainting in children. The most common cause of fainting in children is vasovagal syncope (simple fainting). During syncope, patients are almost always standing and symptoms such as nausea, sweating, paleness, and feeling faint are observed. Fainting that occurs while blood is taken or when standing for a long time are examples of simple fainting. As blood accumulates in the feet and legs as a result of the imbalance in the autonomic nervous system, cerebral blood flow decreases and fainting occurs as a result. In this type of fainting, which has a very short duration (20-30 seconds) and is seen especially in adolescence, most of the attacks end spontaneously over time.
Fainting due to heart diseases
Fainting due to heart diseases
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There are many heart diseases that cause fainting. Although cardiac syncopes are rarer in children, they require very careful examination because they carry the risk of sudden death. While syncopes belonging to this system may develop suddenly without any symptoms, symptoms such as palpitations, chest pain, and shortness of breath may also be present at the beginning.
Especially heart valve diseases, stenosis in the main vessels leaving the heart (aortic stenosis, pulmonary stenosis, etc.). .), high lung pressure (pulmonary hypertension), heart muscle diseases (hypertrophic cardiomyoplatia, myocarditis..), various rhythm and conduction disorders (heart blocks, ventricular tachycardia -VT-, supraventricular tachycardia -SVT-), the main causes of fainting. heart diseases.Fainting due to heart diseases carries a life-threatening risk.
Neurological causes
An important cause of fainting in children. The reason is epilepsy (epilepsy). Generally, in fainting due to epilepsy, symptoms such as body convulsions and tremors, jaw locking, and urinary and fecal incontinence are also observed. However, in atonic epilepsy, which is a type of epilepsy, the body may be completely limp.
Some types of migraine can also rarely cause fainting in children. Fainting due to cerebrovascular disorders, which are more common in adults, is very rare in childhood.
Other causes
Psychological disorders and diseases, hunger, anemia, electrolyte imbalances in the blood and some other metabolic diseases can also cause fainting in children. In addition, conditions that cause dehydration such as medications (sedatives, hypertension drugs, antidepressants..), vomiting, diarrhea, blood loss, excessive sweating can also lead to orthostatic hypotension and syncope.
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