1ST QUERY: I've had a query from an Australian who would like to know if there is a buzzer available for her very weakened grandfather. He has virtually no strength lrft in his hand to press down , so would need something very light to operate. Any ideas?

2ND QUERY: My father is at an advanced stage of PD. Just recently he has developed stabbing pains in one foot, which are now also spreading up his leg. His doctor seems to think it is parkinsons-related. He has been to a podiatrist who can't find anything wrong. Is this kind of pain a feature of late stage PD?