The issue focused on stem cells As discussed earlier in this entry, stem cells may offer promise as therapeutic approaches for treatments ranging from Parkinson's disease and Parkinson's syndrome to Parkinson's disease itself and neurological disorders such as Alzheimer's disease and amyotrophic lateral sclerosis (ALS). Additionally, stem cells might serve as diagnostic biomarkers for neurological disorders such as amyotrophic lateral sclerosis (ALS), amyotrophic lateral sclerosis associated dementia (ALSAD), amyotrophic lateral sclerosis progression (ALSPER), amyotrophic lateral sclerosis