Learning theory explanatory model
A multistep process is thought to be the cause of an anxiety disorder.
Initially, a person "learns" that an originally normal situation triggers anxiety. This situation is then perceived as threatening, such as air turbulence.
If the person were to expose themselves to the same situation again, they may find that the fear was unfounded. However, because the fear is present, a repetition of the situation is avoided and the fear remains. Physical symptoms are perceived more intensely (e.g. heart palpitations), a fear-devil cycle occurs.
Neurobiological explanation model
The internal organs (e.g. heart and respiration) are controlled by the autonomic nervous system.
In people affected by anxiety disorders, this nervous system is probably over-sensitive and can be more easily irritated. As a result, anxiety symptoms develop more quickly. Studies show a possible inheritance of this predisposition, but it is not yet considered fully proven. In addition, the involvement of specific brain areas and neurotransmitters in the development of an anxiety disorder is suspected.
Psychoanalytical explanatory model
Normally, a person reacts to a conflict by trying to compromise. In this way, a psychological equilibrium is restored. If the solution of such a conflict fails, anxiety develops.
Another assumption is based on the possibility that those affected have not learned to deal with fear in their youth. They feel overwhelmed in conflictual situations and childish fears can erupt. Separation anxiety often manifests itself when the loss of a caregiver is imminent.