GBS usually lasts between 14 and 30 days. If your symptoms continue longer, you may be suffering from a chronic form of GBS called
chronic inflammatory demyelinating polyneuropathy and will need more aggressive treatment.
Treatment
If your doctor thinks you have GBS, he will give you a test to measure how well your muscles and nerves work. You may also get a
spinal tap. A doctor inserts a needle into your lower back and takes a small amount of spinal fluid. He’ll check the protein level; it’s high in people with GBS.
If you’re diagnosed with GBS, you should begin treatment right away.
In some cases, in order to speed recovery, the doctor will take blood from your body, “clean” it, and then return it to you. This process is called
plasmapheresis.
Your doctor may give you immunoglobulin, or antibodies. You’ll get high doses of healthy cells through an IV. These help lessen your immune system’s attack on your body.
Some people with GBS need to be hospitalized for a few days. Others stay for several weeks.
You’ll need support until you regain full control of your body. A nurse or loved one may need to exercise your arms or legs for you.
https://www.webmd.com/brain/what-is-guillain-barre