🧠ap psychology review

Mental Illness

Written by the Fiveable Content Team • Last updated August 2025
Verified for the 2026 exam
Verified for the 2026 examWritten by the Fiveable Content Team • Last updated August 2025

Definition

Mental illness refers to a wide range of conditions that affect a person's thinking, emotions, behavior, or overall mental well-being. These conditions can vary in severity and may interfere with daily functioning.

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