Go through these in order and stop at the first one that applies. If you are reading this for someone else, answer for them.
Get emergency help for sudden loss of coordination, especially with facial drooping, one-sided weakness, difficulty speaking, severe headache, confusion, fainting, or a seizure.
Sudden symptoms after a serious head or neck injury also need emergency assessment.
Seek a prompt medical review if there is a noticeable loss of skills that were previously established, worsening weakness, repeated unexplained falls, new vision problems, persistent pain, or a major change in walking.
These are not typical features of stable DCD and may have another cause.
Arrange a routine assessment if coordination problems are persistent, clearly different from those of similar-aged peers, or interfering with self-care, education, work, play, or confidence.
For a child, concerns can be discussed with a primary care clinician, school health service, teacher, or developmental professional.
Every sign above is quoted from the sofidex article on Developmental coordination disorder. If you are not sure, err upward — it is always reasonable to be checked.