Strange Behaviour
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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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Behavioral abnormality
Level of consciousness getting worse
Doesn't remember his/her birthday
Strange movements
Level of consciousness decreasing
Unresponsive to verbal commands
Doesn't remember his/her name
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Developed by doctors.
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Content updated on Jan 4, 2023
About the symptom
Abnormal behavior refers to being aware or told that one has been acting strangely or differently from usual.
When to see a doctor
Seek professional care if you experience any of the following symptoms
Strange behaviour
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.
- sleepwalking
Sleepwalking is when someone walks or carries out complex activities while not fully awake. It usually happens during a period of deep sleep.
- Hypothyroidism
- Hyperactivity disorder
- Attention Deficit Hyperactivity Disorder (ADHD)
- Dissociative disorder
Related serious diseases
- Epilepsy
Epilepsy is a neurological disorder where brain activity becomes abnormal. This can cause seizures of varying lengths of time and severity. Epilepsy can affect people of any age and may occur due to genetic disorders or brain injury such as stroke.
- Hyponatremia
- Dehydration
Questions your doctor may ask about this symptom
Your doctor may ask these questions to check for this symptom
Have you noticed or been told that you have been acting strangely, differently from usual?
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