Parkinson's & depression. All day long.

I understand your concern. Depression is the one of the common comorbid problems along with parkinsons and your father seems to be suffering from it. More clarity is needed regarding his problem. Information regarding his hunger and concentration at whatever he does would also be more helpful to decide on severity of the condition. However it is easily manageable with appropriate treatment, so that dysfunction due to the same can be reduced and his quality of life will improve. Some counselling sessions along with medical help might be useful for him. I would also be more than happy to help you with that if you are looking for further online assistance. You can directly consult with me through Practo as needed. Online chat consultation is available.