Do I need Botox?

​Short answer
Short answer – its good for chronic migraines, where you have more than 15 a month. Its expensive, usually 600-1000 dollars. Make sure a neurologist or oral medicine dr injects you, ie someone with a lot of training, as it’s a medical condition, not a cosmetic condition.
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Not useful for TMD/jaw pain – evidence shows only 30% effective and it's not addressing the reason why you have pain and dysfunction.

Long answer 
So Botox injections work well for chronic headaches/migraines which don’t respond to hands on treatment or the correct medication, work - life balance, or counselling - psychological or spiritual.
All chronic migraine headache sufferers need counselling – either spiritual or psychological for a more lasting pain relief. These are the people that carry the weight of the world on their shoulders and a quick pill is not going to be the quick fix
 
Botox for jaw pain can help, but it only lasts 3-6 mths and you need to keep having the injections. Where as jaw physio looks at the dysfunction and corrects it.
If your therapist injects the lateral pterygoid muscle you will get worse. As this is an important muscle for neutral positioning of the jaw, part of the core muscles, and atrophy/wastage of this muscle causes TMD. Make sure they inject your overactive muscles, usually masseter and medial pterygoid muscle