The flare-ups you experience are probably an inflammatory response. Inflammation is what causes the symptoms. After multiple head bumps, the brain tends to overreact and pump out too much inflammation.

Seek treatment for your neck injury, because that can contribute to concussion symptoms and inflammation.

Don't push through the pain. Rest to allow the inflammation to subside, then gradually increase your activity level. Do just enough activity to cause mild discomfort, but not so much to cause a setback. The do a little more activity each week.

What kind of foods do you eat? A lot of the foods we eat cause inflammation, which will contribute to the symptoms and inhibit the healing process. Inflammation also contributes to anxiety and migraines. So stop eating processed foods, sugary drinks, fried foods, fast food, wheat, and industrial seed oils. Eat lots of healthy saturated fats, vegetables, dark leafy greens, fruits, legumes, seeds, protein, and fish for the omega-3.