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Others believe post-concussion symptoms are related to psychological factors, especially since the most common symptoms â headache, dizziness and sleep problems â are similar to those often experienced by people diagnosed with depression, anxiety or post-traumatic stress disorder.
The signs and symptoms of a concussion can be subtle and may not show up immediately. Symptoms can last for days, weeks or even longer. Common symptoms after a concussive traumatic brain injury are headache, loss of memory (amnesia) and confusion. The amnesia usually involves forgetting the event that caused the concussion. Signs and symptoms of a concussion may include: Headache or a feeling of pressure in the head.