I had GBS the axonal type in 1973 at the age of 23 I was diagnosed with PD in 2013 at the age of 61. I’m sorry but there is definitely an association. I have been told by several neurologists that there is not as GBS is a peripheral neurological disease and PD is a Central Nervous System disease. However, the Brain Stem is affected in Axonal GBS and the last time I checked my Brain Stem was part of my CNS.
I read an article that speculated that all GBS patients have some brain stem involvement.
I also read an article that classified GBS as a Lewy Body Disorder. That it may take 30 years for the increase in Lewy Bodies caused by the GBS to clump together and eventually cause something else like PD.
Please refer to "The Lewy body and Parkinson’s disease In: Clifford Rose F,ed Parkinson’s Disease: clinical and Experimental Advances. London: John Libby and Co, 19873-11
In this article the lewy body positive cases of GBS , spinal cord angioma, MS, Leuco-encephalitis etc
had a latent phase of up to 30 years between the incidental Lewy body disease and PD. This suggests a long preclinical period before one develops PD.
Can someone tell me why more research is not being done? And really, sometimes anecdotal evidence does lead to true answers. GBS and PD are not particularly common. The fact that there probably is an association will not change the fact that I had/have both but maybe there is a answer hidden here to help others.