Answer:
obsessive-compulsive disorder
Step-by-step explanation:
Obsessive-compulsive disorder (OCD) -
It is a type of mental condition, which leads to continuous reoccurrence of unwanted feelings or thoughts, is refereed to as Obsessive-compulsive disorder.
In this disorder, the person tries to do the specific thing again and again, in order to satisfy themselves and their anxiety.
The example of OCD is like, continuous thinking of a particular thing, or biting nail.
Hence, from the given scenario of the question,
Cecil is suffering from obsessive-compulsive disorder.