Change in Personality
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Reviewed By:
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
Just 3 minutes.
Developed by doctors.
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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
- Uremia / chronic renal failure
Severe decrease in kidney function. There are many causes of this, from repeated damage due to infections, diabetes, high blood pressure to autoimmunity (body's immune system attacking itself).
- Hyponatremia
- Hepatic encephalopathy
- Chronic subdural hematoma
- Hypocalcemia
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
Symptoms from the same body system / part
Symptoms treated by the same specialty
Reviewed By:
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.
Just 3 minutes.
Developed by doctors.
Ubie is supervised by 50+ medical experts worldwide
Seiji Kanazawa, MD, PHD
Obstetrics and gynecology (OBGYN)
National Center for Child Health and Development, Japan