Indeed sir, I guess there shouldn't be a problem because the doctors said there was no need for exams because I was conscient, lucid and remembered everything and didn't pass out.
Think that speaks volumes.
I'd never advocate lying to the AME, it's a bit like sleeping with your mate's mum. A good idea at the time, but it'll eventually catch up with you
However, how you deliver the story may raise less concerns than worries.
"Didn't stay in overnight," "Minor injury ," "No loss of consciousness" "not under the car of a speciaslist," "discharged that afternoon," "didn't need any investigations," "was home in 4 hours," "was riding my bike the next day,"
are far more reassuring than phrases such as;
"the neurosurgeon," "MRI scan," "kept in for observation," "ITU," "HDU," "Head injury," "Glasgow Coma Scale," "Behaviour change," "the trauma team," "air ambulance had to land,"
may raise an eyebrow.