Developmental Co-Ordination Disorder (DSM-5, American Psychiatric Association, 2013)
A. Motor performance that is substantially below expected levels, given the person's chronologic age and previous opportunities for skill acquisition. The poor motor performance may manifest as coordination problems, poor balance, clumsiness, dropping or bumping into things; marked delays in achieving developmental motor milestones (e.g., walking, crawling, sitting) or in the acquisition of basic motor skills (e.g., catching, throwing, kicking, running, jumping, hopping, cutting, colouring, printing, writing).
B. The disturbance in Criterion A, without accommodations, significantly and persistently interferes with activities of daily living or academic achievement.
C. Onset of symptoms is in the early developmental period.
D. The motor skill deficits are not better explained by intellectual disability (intellectual development disorder) or visual impairment and are not attributable to a neurological condition affecting movement (e.g., cerebral palsy, muscular dystrophy, degenerative disorder).