Check the paperwork you filled out. If you waived a broad range of simple negligence claims, the specific facts may not matter and you may be barred. If you did not fill out a waiver, see Shiver's answer above.
Unless there is long term harm, it is probably not worth lawyering up. To tie the meal to the hospital bill you would need a lab culture taken from you at the hospital to match it to a strain at the restaurant. If its a larger chain, they may have a medical payments insurance policy that will pick up the ER bill so its worth it to call and make inquiries. Taking it further than that is possible if the cultures come back but I just don't think lawyers are required for food poisoning unless the...
This is an uninsured motorist covered event assuming it meets the requirements of a timely report to the police and the physical damage from another vehicle requirement. (Ie does not look like you hit a tree and parked it) Insist on only paying the $250 deductible. Most carriers will back down when you tell them you know the law. If not contact the insurance commissioners office.
It's a little unclear if you are asking can you recoup the difference between your workers comp wage and what your salary would have been or any wages whatsoever for the ten months. Any way you slice it though with a complex case involving two surgeries and likely permanency, you ought to a least do a free in person consultation with a lawyer to make sure you are not making any mistakes.
There is in not really a legal definition but it is a common term.
Georgia has an actual jury charge on this issue. You would be known as an "eggshell plaintiff." You take the victim as you find them. If you were teetering in the verge of becoming symptomatic but had no symptoms previously or had drastically less symptoms and the crash aggravates it to the point that you need surgery, then you could legally recover. Whether a jury would agree with you would depend on the prior pain...
Shiver is correct that it won't affect your case. The question you should have asked is; why am I not comfortable with my current lawyer? With a chiro and epidurals involved, it is highly likely that you have one. Be sure that you have had in person sit down meetings with the lawyer so that important questions like this are asked and answered. Insist on good customer service.
Did the fire department arrive and determine what had spilled in the store? You have to be able to identify the particular agent that caused the reaction and show that it got into the store through their negligence.