He is suffering from combat stress reaction.

He likes to take a walk in the park at dusk.

He is an expert in psychiatry.

His father was diagnosed with schizophrenia in the past.

His brother was diagnosed with schizophrenia a long time ago.

He has psychopathy, making it difficult for him to understand social rules.

He is known as an expert in psychoanalysis.

My brother works as a psychiatrist.

He is looking for a new job at the public employment security office.

My brother has been taking immunosuppressants after his transplant surgery.