Attributes of a brain concussion

[Ksjusha]

The doctor tell or say what attributes of a brain concussion? Whether there can be a brain concussion from impact by an entrance door? The head hurts but is not turned and here ears zalozhio

[Kutin M.A.]

Usually - a nausea, a vomiting, a short-term loss of consciousness and an amnesia for the period of reception of a trauma (i.e. for a moment before and during impact)

[Aritmolog]

Wished to write, that the neurologist or the neurosurgeon will better respond to this question, and he already and has responded. Thanks.