心しん的てき外がい傷しょう後ごストレス障しょう害がい

also: ピーティーエスディー

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Meanings

Medical term for a mental health condition triggered by a traumatic event. Used in clinical and everyday contexts.

トラウマ
トラウマ is a broader, more casual term for psychological trauma, while 心的外傷後ストレス障害 is the formal clinical diagnosis.

心しん的てき外がい傷しょう後ごストレス障しょう害がい
Standard medical term; the full kanji-katakana compound is the formal written form.
PTSD
Common English-derived abbreviation used in Japanese medical and general contexts.

Compound of 心的 (psychological), 外傷 (trauma), 後 (after), ストレス (stress), and 障害 (disorder), calqued from English 'post-traumatic stress disorder'.