India, July 21 -- Personality is multifaceted and cannot be defined by a single trait. However, if someone undergoes a drastic change that seems completely out of character. You may initially think it is an intense reaction to stress or something psychological. But there are also cases where it can be neurological, affecting the physiology of the brain.ALSO READ: Neurologist explains difference between normal forgetfulness and dementia memory loss: 'If it gets worse over time.'

So, if a friend or family member does not seem like themselves and is behaving unusually, it may require a closer look.

Dr Mudasir Mushtaq Shah, consultant interventional neurologist at Narayana Hospital, Gurugram, told HT Lifestyle something alarming: that sudde...