Meaning of the word "mental disorder" in English

What does "mental disorder" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

mental disorder

US /ˈmɛntəl dɪsˈɔrdər/
UK /ˈmɛntl dɪsˈɔːdə/

Noun

a condition that affects a person's thinking, feeling, or mood, and may affect his or her ability to relate to others and function on a daily basis

Example:
Early diagnosis and treatment of a mental disorder can significantly improve outcomes.
Stigma associated with mental disorders often prevents people from seeking help.