what is the possible medical condition of a three year old who has blacked out when she hit her head.  This has happened twice.  Once when she fell out of a chair after having a little tantrum about food that was on her plate.  the second time hitting her head on a counter.  She came around shortly after.
Thanks for consultation. Your child gets black out after minor head trauma. This can be incidental but actually might get a kind fit or short schemer disorder. This is usually in child Chat Doctor. My humble advice is;1.check the heart rate and if it is slower than 60 per minute then needs pediatric cardiologist opinion.2. Brain EEG test.3. Brain MRI. If all negative then its excluded for any serious problem. If it is positive which is unlikely, then needs follow up with pediatric neurologist.