Certain mental disorders can cause shifts in a person’s personality, including borderline personality disorder (BPD), dissociative identity disorder (DID), and bipolar disorder. BPD, for example, is characterized by intense emotional fluctuations and unstable relationships, leading to sudden changes in behavior and self-image. DID may cause a person to experience different identities or personalities, often triggered by stress. Bipolar disorder is marked by extreme mood swings, ranging from depressive lows to manic highs, which can affect a person’s behavior and personality. For further insights and expert care, visit 'https://www.delhimindclinic.com/' and 'https://www.bestpsychiatristsindelhi.com/'. Understanding these conditions and seeking professional help is essential for managing symptoms and ensuring proper care.