Answer:
ADHD
Step-by-step explanation:
Given that your statement "he has problems running about or climbing excessively in situations in which it is inappropriate" implys That he "does in fact run about and climb excessively and not that it is a problem for him. If so he exhibits all the sy.symptoms that a Dr would categorize or diagnose with ADHd just off your analysis alone since there is no actual test for ADHD.