Change in Personality

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Reviewed By:

Yu Shirai

Yu Shirai, MD (Psychiatry)

Dr. Shirai works at the Yotsuya Yui Clinic for mental health treatment for English and Portuguese-speaking patients. He treats a wide range of patients from neurodevelopmental disorders to dementia in children and participates in knowledge sharing through the Diversity Clinic.

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People with these symptoms also use Ubie's symptom checker to find possible causes

  • Abruptly different personality from before

  • Episodes of aggression all of a sudden

  • Suddenly becoming aggressive

  • Rapid change in personality

  • Personality change

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Content updated on Jan 4, 2023

About the symptom

Anxiety, bipolar disorder, depression, other psychiatric and neurological conditions  can alter one's personality.

When to see a doctor

Seek professional care if you experience any of the following symptoms

  • Personality change

Possible causes

  • Schizophrenia

    A psychological disorder where there is altered brain function. The exact cause is unknown, but a combination of genetic, psychological and environmental factors are likely responsible.

  • Alzheimer dementia (AD)

    Alzheimer's disease is the most common cause of dementia. The brain shrinks affecting memory and behavior. Symptoms worsen over time, and can interfere with daily life. Increasing age increases the risk for Alzheimer dementia.

  • Dissociative disorder

    Dissociative disorder is mental disorder that involve experiencing a disconnection and lack of continuity between thoughts, memories, surroundings, actions and identity. People with dissociative disorder escape reality in ways that are involuntary and unhealthy and cause problems with functioning in everyday life.

  • Progressive subcortical vascular encephalopathy
  • Anorexia nervosa / bulimia nervosa

Related serious diseases

Questions your doctor may ask about this symptom

Your doctor may ask these questions to check for this symptom

  • Do you feel your personality has changed?

  • Have you currently regained consciousness after temporarily losing consciousness?

  • Do you have headaches or does your head feel heavy?

  • Do you have a fever?

  • Do you feel any weakness in your arms or legs?

Other Related Symptoms

Similar symptoms or complaints

Reviewed By:

Yu Shirai

Yu Shirai, MD (Psychiatry)

Dr. Shirai works at the Yotsuya Yui Clinic for mental health treatment for English and Portuguese-speaking patients. He treats a wide range of patients from neurodevelopmental disorders to dementia in children and participates in knowledge sharing through the Diversity Clinic.

From our team of 50+ doctors

Just 3 minutes.
Developed by doctors.

Ubie is supervised by 50+ medical experts worldwide

Shohei Harase

Shohei Harase, MD

Neurology

Kameda Medical Center, Japan

Yu Shirai

Yu Shirai, MD

Psychiatry

Yotsuya Yui Clinic, Japan

Yoshinori Abe

Yoshinori Abe, MD

Internal medicine

Co-founder of Ubie, Inc.

Rohini R

Rohini R, MD

Ear, nose, throat (ENT)

Bayshore Health Centre, India

Seiji Kanazawa

Seiji Kanazawa, MD, PHD

Obstetrics and gynecology (OBGYN)

National Center for Child Health and Development, Japan

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