Limb Weakness
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Reviewed By:

Bret Mobley, MD, MS

Bret Mobley, MD, MS (Neuropathology)

Dr. Mobley graduated from the University of Michigan Medical School, completing a masters degree in neuroscience between his second and third years of medical school. He trained as a resident in pathology at Stanford University Hospital before joining the faculty of Vanderbilt University Medical Center in Nashville Tennessee in 2010. He was promoted to Associate Professor in 2018 and to Neuropathology Division Director in 2020.

Shohei Harase, MD

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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Content updated on Apr 4, 2024

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

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  • The little finger of the right foot does not move

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  • The little finger of the right hand is not strong

  • The little finger of the right foot is not strong

  • Sudden weakness on one side of the body that lasted for a while

  • Muscle weakness after breathing too many times in a short time

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About the Symptom

Decreased muscle strength, where you try your best to move a limb but a normal muscle contraction doesn't occur. Muscle weakness is typically due to nerve issues or problems within the muscles.

When to see a doctor

Seek professional care if you experience any of the following symptoms

  • Weakness in arms or legs

Possible Causes

Generally, Limb weakness can be related to:

  • Muscular Dystrophy

    Muscular dystrophy (MD) is a group of diseases causing progressive weakness and muscle wasting. It is caused by mutated genes that normally allow healthy muscles to form. Different types of MD can appear at different ages, ranging from childhood to adulthood, and also present different levels of severity and clinical manifestations.

  • Chronic Inflammatory Demyelinating Polyneuropathy

    Chronic inflammatory demyelinating polyneuropathy (CIDP) or chronic relapsing polyneuropathy happens when the immune system attacks the myelin sheaths (protective fatty coverings) around the nerves. The exact triggers are unclear but could be systemic conditions like liver disease, diabetes, infections, cancer, immune system disorders, etc.

  • Neuromyelitis Optica (NMO)

    Neuromyelitis optica (NMO) is a rare condition in which the immune system damages the spinal cord and the optic nerves.

  • Progressive Multifocal Leukoencephalopathy (AIDS-Related PML)
  • Lambert-Eaton Syndrome

Related serious diseases

Sometimes, Limb weakness may be related to these serious diseases:

Doctor's Diagnostic Questions

Your doctor may ask these questions to check for this symptom:

  • Do your arms or legs feel weak?

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Find Similar Symptoms

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Reviewed By:

Bret Mobley, MD, MS

Bret Mobley, MD, MS (Neuropathology)

Dr. Mobley graduated from the University of Michigan Medical School, completing a masters degree in neuroscience between his second and third years of medical school. He trained as a resident in pathology at Stanford University Hospital before joining the faculty of Vanderbilt University Medical Center in Nashville Tennessee in 2010. He was promoted to Associate Professor in 2018 and to Neuropathology Division Director in 2020.

Shohei Harase, MD

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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