It seems that he is suffering from chuunibyou.

He often behaves strangely because of his 'chuunibyou' (middle-school 2nd year syndrome).

He is showing behavior characterized by 'chuunibyou'.

She was diagnosed with collagenosis.

His father died of Creutzfeldt-Jakob disease.

His father was diagnosed with schizophrenia in the past.

An intercontinental ballistic missile is a weapon with a very large destructive power.

The launch of intercontinental ballistic missiles has become an international issue.

The intertransversarius muscle is an important part of our body, especially part of the back muscles.

He is doing special exercises to strengthen his dorsal interosseus muscle.