Reviewed By:
Benjamin Kummer, MD (Neurology)
Dr Kummer is Assistant Professor of Neurology at the Icahn School of Medicine at Mount Sinai (ISMMS), with joint appointment in Digital and Technology Partners (DTP) at the Mount Sinai Health System (MSHS) as Director of Clinical Informatics in Neurology. As a triple-board certified practicing stroke neurologist and informaticist, he has successfully improved clinical operations at the point of care by acting as a central liaison between clinical neurology faculty and DTP teams to implement targeted EHR configuration changes and workflows, as well as providing subject matter expertise on health information technology projects across MSHS. | Dr Kummer also has several years’ experience building and implementing several informatics tools, presenting scientific posters, and generating a body of peer-reviewed work in “clinical neuro-informatics” – i.e., the intersection of clinical neurology, digital health, and informatics – much of which is centered on digital/tele-health, artificial intelligence, and machine learning. He has spearheaded the Clinical Neuro-Informatics Center in the Department of Neurology at ISMMS, a new research institute that seeks to establish the field of clinical neuro-informatics and disseminate knowledge to the neurological community on the effects and benefits of clinical informatics tools at the point of care.
Shohei Harase, MD (Neurology)
Dr. Harase spent his junior and senior high school years in Finland and the U.S. After graduating from the University of Washington (Bachelor of Science, Molecular and Cellular Biology), he worked for Apple Japan Inc. before entering the University of the Ryukyus School of Medicine. He completed his residency at Okinawa Prefectural Chubu Hospital, where he received the Best Resident Award in 2016 and 2017. In 2021, he joined the Department of Cerebrovascular Medicine at the National Cerebral and Cardiovascular Center, specializing in hyperacute stroke.
Content updated on Apr 4, 2024
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Feeling at the base of the foot is strange
The sense of the right half of the body is strange
I can no longer do fine work with my hands
The soles of the feet are tingling
I have a strange sense of balance
Decreased sensitivity to pain
The sensation of the buttocks is strange
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About the Symptom
Numbness describes a loss of sensation, a loss of feeling, or abnormal sensations in a part of the body. Occasionally, "numbness" will be used to describe muscle weakness.
When to see a doctor
Seek professional care if you experience any of the following symptoms
Peripheral cyanosis
Back pain
Numbness of lower limbs
Different degrees of numbness on each side
Recent weight loss
Unexplained weight loss of 5% or more in 1 month
Numbness / sensory disorder
Abnormal sensation (tingling, prickling)
Difficulty urinating
double vision
Involuntary movements
Low back pain
Possible Causes
Generally, Numbness or abnormal sensation can be related to:
Arteriosclerosis obliterans or peripheral artery disease is a condition where arteries become clogged from fatty deposits. The most commonly affected arteries are the abdominal aorta and arteries of the lower limbs. Common symptoms include pain and cramping in the lower extremities with increased activity because those muscles are unable to get adequate blood flow.
A condition in which the neck bones (cervical spine) become damaged due to wear and tear. Risk factors include long periods of desk work and driving, previous neck injuries, and aging.
Hereditary sensory neuropathy is a disorder characterized by abnormal nerve function in the arms, legs, and feet. The nerves that are affected transmit sensation and touch information to the brain. People who are affected cannot feel with their limbs and may develop muscle wasting. The disorder is caused by mutations in certain genes and as a result, runs in families.
Related serious diseases
Sometimes, Numbness or abnormal sensation may be related to these serious diseases:
Injury to the spinal cord at the neck level, often caused by falls or accidents.
Doctor's Diagnostic Questions
Your doctor may ask these questions to check for this symptom:
Do you feel any numbness or altered sensation?
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Find Similar Symptoms
References
Jankovic J, et al., eds. Disorders of peripheral nerves. In: Bradley and Daroff's Neurology in Clinical Practice. 8th ed. Elsevier; 2022.
Freedman M. Numbness. Merck Manual Professional Version. Oct 2023
https://www.merckmanuals.com/professional/neurologic-disorders/symptoms-of-neurologic-disorders/numbness
Reviewed By:
Benjamin Kummer, MD (Neurology)
Dr Kummer is Assistant Professor of Neurology at the Icahn School of Medicine at Mount Sinai (ISMMS), with joint appointment in Digital and Technology Partners (DTP) at the Mount Sinai Health System (MSHS) as Director of Clinical Informatics in Neurology. As a triple-board certified practicing stroke neurologist and informaticist, he has successfully improved clinical operations at the point of care by acting as a central liaison between clinical neurology faculty and DTP teams to implement targeted EHR configuration changes and workflows, as well as providing subject matter expertise on health information technology projects across MSHS. | Dr Kummer also has several years’ experience building and implementing several informatics tools, presenting scientific posters, and generating a body of peer-reviewed work in “clinical neuro-informatics” – i.e., the intersection of clinical neurology, digital health, and informatics – much of which is centered on digital/tele-health, artificial intelligence, and machine learning. He has spearheaded the Clinical Neuro-Informatics Center in the Department of Neurology at ISMMS, a new research institute that seeks to establish the field of clinical neuro-informatics and disseminate knowledge to the neurological community on the effects and benefits of clinical informatics tools at the point of care.
Shohei Harase, MD (Neurology)
Dr. Harase spent his junior and senior high school years in Finland and the U.S. After graduating from the University of Washington (Bachelor of Science, Molecular and Cellular Biology), he worked for Apple Japan Inc. before entering the University of the Ryukyus School of Medicine. He completed his residency at Okinawa Prefectural Chubu Hospital, where he received the Best Resident Award in 2016 and 2017. In 2021, he joined the Department of Cerebrovascular Medicine at the National Cerebral and Cardiovascular Center, specializing in hyperacute stroke.
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