Answer:
Obsessive-Compulsive disorder
Explanation:
Obsessive-Compulsive disorder is a mental illness in which a person filled with excessive worry. It causes excessive intrusive thoughts, urges, and obsession for doing things repeatedly. This does not count in the habit of biting nails. This is a certain color of bad and good. A compulsive habit is like to wash hands repeatedly, checking the door lock again and again.
People who have compulsive thought and obsessions areas
- To take one a day
- Thought are beyond the control
- Not enjoyable
- Interfere with life work etc.