The Causes Of Phobias
The cause of the phobia is not yet clear.Studies show that it may be related to genetic factors, diathesis factors, physiological factors, psychosocial factors and so on.
Agoraphobia has a family genetic predisposition, especially affecting female relatives.Studies have shown that identical twins are more likely to suffer from phobias than fraternal twins.Certain phobias have obvious genetic predisposition, such as blood and injection fear.
Patients pre-disease personality is mostly timid, shy, passive, dependent, highly introverted, prone to anxiety, fear, and compulsive tendencies.If the mother too much protection from childhood, also prone to phobia after adulthood.
Someone found that the nervous system of phobic patients woke up the level of heighten, this kind of person is very sensitive, alert, in the state of excessive awakening.The sympathetic nerve excitation in the body is dominant, and the secretion of epinephrine and thyroxine increases.But the causal relationship between this physiological state and phobia is not clear.
Patients may have some kind of mental stimulation factor before their first onset, and data indicate that nearly two-thirds of patients actively trace an event related to their onset.At the beginning of the 19th century, American psychologists used the theory of conditioned reflex to explain the mechanism of phobia. They believed that the expansion and persistence of phobia symptoms were due to the repeated occurrence of symptoms that conditioned anxiety, while avoidance behavior hindered the decline of conditioning.That is, when the patient encounters a fear stimulation, then other stimuli that are not fear (irrelevant stimulation) may also act on the patient's cerebral cortex, both as a hybrid stimulus to form a conditional reflex, so in the future encounter this scenario, even if only unrelated stimuli, also can cause strong fear.However, some patients have no experience of intimidation, and some patients' objects of fear often change, which is difficult to explain by the theory of conditioned reflex.