Answer:
Anxiety Disorders
Step-by-step explanation:
Anxiety Disorders -
It is the medical condition, where the person experiences extreme level of fear and worry , is referred to as anxiety disorder.
The person is not able to concentrate in a particular task and continuously feels insecure and worried about certain activity.
The symptoms of anxiety disorder is as follows -
- always tired and exhausted
- feeling irritated and nervous
Hence,
From the question ,
The continuous thought about future , is referred to as the anxiety disorder.