Hey there, im really sorry for all your pain.
Yes i strongly recommend you see a neurologist, of course i am not a doctor but i have ATN and 90 percent of what you describe is what i suffer from. Unlike classic TN which tends to be short sharp burst of very strong electrical pains etc, ATN can have that horrible deep knawing pain that for me, goes on for hours and hours, sometimes constantly with intermittent horrible stabbing sensations.

I understand you diagram fully, all of the hilighted areas cause bad pain but the degrees of pain and sensation of the pain feel different or worse in some spots, exactly what i have suffered from for years.

You should get evaluated as certain anti-epileptics (im on tegretol) can help to greatly reduce or 'calm' the level of pain for many.

Depending on the cause of TN surgical treatment can be helpful but only after explaining your pain history thoroughly to a neurologist can they guide you in the right direction.

It IS worth the money for even some relief at least, i lived in agony for a long time hoping for it to just 'go away' and i regret that very much, get some meds that might help ease the pain at least so you feel you can function. (for some lucky people, meds can make them virtually pain free)

Best of luck to you and if you need to chat anymore about it please let me know as this is extremely similar to what i go through, your not alone!!