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flat affect
flat affect Flat affect refers to very limited facial expression and social withdrawal that may look like an enduring lack of emotion, especially in severe mental illness.
Flat affect refers to very limited facial expression and social withdrawal that may look like an enduring lack of emotion, especially in severe mental illness. The source emphasizes that this apparent flatness can vary with stress level, interpersonal context, culture, and medication, so it should not automatically be assumed to be a fixed trait.