The best replacement for concussion is contusion.

The best alternatives to concussion are rated as following:

★★★★★	contusion
★★★	tbi
★★	hangover
★★	head injury
★★	closed head injury
★	flashbang
★	traumatic brain injury
★	head trauma
★	flashbang black ops
★	brain bleed
★	bump on head
★	headache
★	percussion
★	mild concussion
★	whiplash
★	subluxation
	brain injury
	epidural hematoma
	cerebral contusion
	knockout
	flash black ops
	brain hemorrhage
	subdural hematoma
	nova gas
	contusion which is more severe
	head bump
	skull fracture
	post concussion syndrome
	fractured skull
	hematoma
	dehydration
	neck injury
	knocked out

Your alternative for concussion is not listed? Suggest!

Speaking about concussion, one probably shouldn't forget about loss of consciousness.

Other search terms related to concussion and their ratings are:

★★★★★	loss of consciousness
★★★★★	memory loss
★★★★	hitting head
★★★	vomiting
★★★	headache
★★	neck pain
★★	amnesia
★	head trauma
★	nose bleed
★	pupil dilation
★	seizure
★	whiplash
★	skull fracture
★	blurred vision
	head injury
	losing consciousness
	no headache

You have in mind a companion for concussion and it is not yet here? Propose!

Google Trends

Scale is based on the average worldwide traffic of concussion in all years. Click on graph for more.

concussion

contusion

tbi