Answer:
shift work maladaptation syndrome
Explanation:
Carl might be suffering from shift work maladaptation syndrome
The symptoms of shift work maladaptation syndrome is
1) lack of sleep
2) shift routine hard to adapt
3) Lack of energy
4) health and interpersonal issues
5) Difficult personal relationship
6) Difficulty concentrating
7) Irritability and depression
so we can say here by night shift Carl have shift work maladaptation syndrome