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Donald Trump appears to be exhibiting many of the outward characteristics of Narcissistic Personalty Disorder (NPD). NPD is a defect in oneâs personality that manifests as an excessive mental preoccupation with oneself â usually to the detriment of everyone else.
Mental Health Conditions. A mental illness is a condition that impacts a person's thinking, feeling or mood and may affect his or her ability to relate to others and function on a daily basis.