Are there any treatments for psycho-motor impairment?

Depends what u mean: This can cover gross motor skills like gait, or fine motor skills like handwriting. A variety of therapists might be involved such as physical therapists and occupational therapists. Assessment might be done by physicians such as neurologists or rehab med doctors or neuropsychologists. Assessment usually guides the appropriate treatment.

See below: Treating psychomotor retardation is generally linked with treating its underlying cause, which is usually severe depression or bipolar disorder. Treatment sometimes involves therapy; individuals who meet with therapists on a regular basis can sometimes progress beyond their illnesses and lead mentally healthy lives. In other cases, the nature of the disorder necessitates medication.