Apsychological disorder in children characterized by unrealistic and persistent worry that something will happen to their parents, and that may result in refusal to leave home, is

Separation anxiety disorder.

Explanation:

Separation anxiety disorder is described as the critical state of mind in an individual where he/she becomes vulnerable to separation anxiety at any stressful or tense situation. It usually occurs in children where they feel distressful if separated from parents or loved loves.

Children tend to avoid leaving home, face nightmare about their parents suffering from tough situation, experience excessive stress,etc.This disorder can be reduced by anti- anxiety therapy and other medication approach.

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