How long does.post concussion syndrome last?. i suffered a concussion close to a.yr ago and still feel the effects no headaches but no energy, tired, very moody.etc.. help?

Clarity: Concussion is a transient brain injury, and so-called post-concessional symptomatology is unlikely to persist beyond 6 weeks, unless there has be structural injury to brain or development of post-traumatic stress disorder. Due to your concerns, recommend seeing a psychiatrist or psychologist and get this tested and treated. A neurologist may be required.