Millions of people each year in the US suffer from head or neck injuries which can affect our migraine condition. Around 1 in 7 daily chronic headaches are due to head or neck injury. Concussion and whiplash are two of the most common head and neck injuries which often go unreported. People may feel fine right after the incident, but get worse later. You might be someone who experienced a concussion or whiplash and not even realised it.