This is an outline for a podcast. Parkinson's Disease (PD) is a progressive neurodegenerative disease in which there is increasing loss of dopamine neurones from the basal ganglia (Simon et al. Clin Geriatr Med. 36(1):1-12). Motor symptoms, which are usually asymmetrical, include resting tremor, rigidity, bradykinesia (slow movement) and, usually later on, postural instability. PD is primarily a clinical diagnosis although a DaTscan, which if positive shows asymmetrical loss of dopamine uptake in the basal ganglia, is helpful in cases of doubt (Tsang and Walker J Neurol 270(5):2550-2558).