It has been my experience that chiropractic manipulation opens the pathways for the nerves to reduces spasms through out the nervous system. Correct spine alighnment is very important to good health.
That would depend on why you are having spasms. If it is caused by misallignment, then a treatment would probably help. If it is caused by muscles, treatment by a massage therapist would probably help more. Find out the reason and then try a treatment.
If the problem stems from pressure on a nerve because something is out of place then yes a chiropractor can help you with your problem. It may take several treatments to realign things properly.
Yes. Most chiropractic work is massaging muscles affected my nerves. Damaged or pinched nerve will cause ticks and spasms. Most of the time a few visits to your doctor will clear it right up.