Danny. First, I suggest you should go see your physician for a full evaluation, since no one here can give you a definitive answer. However, there are a few clues to your condition. Based on your screen name, I’m going to assume you are a man. Then, I would ask if you drink alcohol and smoke, and also if any treatments are helping (i.e. tylenol). The most common “simple” causes of recurrent headaches are tension headaches, migraine headaches and cluster headaches. Migraines can be triggered by a variety of factors, but I’ve never heard of withdrawal from meat as a trigger. However, what could be happening is that you are experiencing a cluster headache pattern that is coincident with your withdrawal from meat. Cluster headaches tend to occur in men in their 20s-40s who are smokers, and can also be triggered by alcohol. All 3 forms of headache are treated differently, and so I would go back to my original point which is to get a formal evaluation.