kolkata bengals maverick politician mukul roy who has switched back and forth between the tmc and bjp in recent years has been grappling with parkinsons disease and dementia he underwent surgery for a neurological ailment last month and while his physical condition has improved there are doubts about his cognitive abilities according to his doctorsroy had surgery for hydrocephalus a condition where the fluid in the brain builds up and could potentially harm the brainmr roys physical health has improved a lot compared to what it was a month back he is physically fit to travel but how much he has regained his mental functioning is yet to be ascertained dementia can never be totally reversed and there is always a chance it may get worse with age eminent neurosurgeon dr s n singh who has been treating the politician for quite some time told pti dementia is a condition in which a person may lose cognitive functioning which includes thinking remembering and reasoning to an extent parkinsons disease on the other hand is a neurological disorder which affects the nervous system roys son subhrangshu who also returned to the tmc along with his father in 2021 told pti telephonically baba has recovered well from several health issues he is better now but his dementia has deteriorated vastly and hence he is making all kinds of statements the junior roy told pti on monday evening subhrangshu had lodged two firs alleging that his father was untraceable hours before roy was spotted in new delhi where he claimed he had travelled there as a delhi mp and mla speaking to a bengali news channel roy claimed that he was never a mla and has always been a member of the parliament he also said he has to fight the cpim and then went on to say that there is a need to fight cpim congress and tmcwith inputs from pti