He has a disorder that affects his ability to concentrate.

The teenagers rampaged through the library, disordering the neatly shelved books and scattering furniture.

She is struggling with an eating disorder.

She was diagnosed with bipolar affective disorder last year.

The students were disorderly in the classroom.

The police raided a disorderly house last night.

The disorderliness of the room made it difficult to find anything.