Can vertigo be treated/ cured? symptoms last for a week or more and episodes occur every 4-6 weeks. have had two concussions in the past, related?

Need a diagnosis: Head trauma may have started this, as this can affect the vestibular apparatus by disrupting the otolithic system, or perhaps post-traumatic meniere's, or endolymphatic fistula. Sometimes, a simple epley maneuver is curative, but the diagnosis needs to be pinned down. Seek an experienced otolaryngologist and get tested.

Vertigo: First, probably not related to past concussion if awhile ago though that is important information. Need to determine what is causing your symptom. May be an ear problem , may be something else non ear related. If a cause can be identified it is treatable usually.