Read below about numbness in one upper arm, including causes and common questions. Or get a personalized analysis of your numbness in one upper arm from our A.I. health assistant. At Buoy, we build tools that help you know what’s wrong right now and how to get the right care.

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8 Potential Numbness in One Upper Arm Causes

Disclaimer: The article does not replace an evaluation by a physician. Information on this page is provided as an information resource only, and is not to be used or relied on for any diagnostic or treatment purposes.

  1. 1.Uterine Fibroids

    Uterine fibroids are noncancerous tumors in the uterus. They are common in women of childbearing age.

    Treatment ranges from medication to surgical removal of the fibroid.

    Rarity:
    Common
    Top Symptoms:
    vaginal bleeding, pelvis pain, abdominal cramps (stomach cramps), painful periods, irregular period
    Urgency:
    Primary care doctor
  2. 2.Brain Tumor or Mass

    A brain lesion can be cancerous or non-cancerous. Nonetheless, they are a potentially serious issue and should be discussed with a physician.

    Uncertain. Prognosis is very dependent on what is found

    Rarity:
    Rare
    Top Symptoms:
    fatigue, headache, nausea, loss of appetite, irritability
    Symptoms that always occur with brain tumor or mass:
    focal neurological symptoms
    Urgency:
    In-person visit
  3. 3.Thoracic Outlet Syndrome

    Thoracic Outlet Syndrome is the compression of the nerves and/or blood vessels that run through the upper chest. It can occur as a result of trauma, surgery, growths in the body, or just randomly.

    Resolves with treatment (30% relapse)

    Rarity:
    Rare
    Top Symptoms:
    pain in one shoulder, spontaneous shoulder pain, arm weakness, arm numbness, pain in one shoulder blade
    Urgency:
    Primary care doctor
  4. 4.Carotid Artery Dissection

    A carotid artery dissection is the tearing of the walls of the carotid arteries, which deliver blood to the brain from the aorta. This is a medical emergency.

    About 10% have recurrence

    Rarity:
    Rare
    Top Symptoms:
    new headache, history of headaches, steady headache, neck pain on one side, headache near one temple
    Urgency:
    Emergency medical service

    Numbness in One Upper Arm Checker

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  5. 5.Acute Costochondritis (Chest Wall Syndrome)

    Costochondritis is an inflammation of the cartilage that connects a rib to the breastbone. Pain caused by costochondritis may mimic that of a heart attack or other heart conditions.

    Costochondritis is generally self-limiting but may take several weeks to go away.

    Rarity:
    Uncommon
    Top Symptoms:
    rib pain, chest pain that is worse when breathing, chest pain, rib pain when moving, pain when pressing on the chest
    Urgency:
    Phone call or in-person visit
  6. 6.Stroke or Tia (Transient Ischemic Attack)

    A stroke is a medical emergency. Strokes happen when blood flow to the brain is stopped.

    Indefinite

    Rarity:
    Common
    Top Symptoms:
    new headache, dizziness, stiff neck, being severely ill, vision changes
    Symptoms that never occur with stroke or tia (transient ischemic attack):
    bilateral weakness
    Urgency:
    Emergency medical service
  7. 7.Guillain - Barre Syndrome

    Certain immune system conditions can damage the peripheral nervous system (PNS) which connect the brain and spinal cord with the rest of the body.

    This is a chronic condition.

    Rarity:
    Rare
    Top Symptoms:
    diarrhea, shortness of breath, constipation, general numbness, spontaneous back pain
    Symptoms that always occur with guillain-barre syndrome:
    progressive weakness
    Urgency:
    Hospital emergency room
  8. 8.Carpal Tunnel Syndrome

    The carpal tunnel is a narrow passageway filled with ligament and bones at the base of your hand. It contains nerve and tendons. Sometimes, thickening from irritated tendons or other swelling narrows the tunnel and causes the nerve to be compressed. Symptoms usually start gradually, and as they worsen, grasping objects can become difficult.

    Recovery time varies depending on treatment.

    Rarity:
    Common
    Top Symptoms:
    spontaneous shoulder pain, hand weakness, wrist pain, weakness in one hand, pain in both hands
    Urgency:
    Primary care doctor

Questions Your Doctor May Ask About Numbness in One Upper Arm

  • Q.About your [upper arm], do you notice:
  • Q.Any fever today or during the last week?
  • Q.About your [shoulder], do you notice any of the following?
  • Q.Have you been experiencing any muscle weakness that is symmetrical (equal on both sides of your body)?

If you've answered yes to one or more of these questions, try our numbness in one upper arm symptom checker to find out more.

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Numbness in One Upper Arm Symptom Checker Statistics

  • People who have experienced numbness in one upper arm have also experienced:

    • 8% Pain in One Shoulder
    • 7% Rib Pain on One Side
    • 6% Pain in One Arm
  • People who have experienced numbness in one upper arm had symptoms persist for:

    • 45% Less Than a Day
    • 19% Less Than a Week
    • 19% Over a Month
  • People who have experienced numbness in one upper arm were most often matched with:

    • 2% Thoracic Outlet Syndrome
    • 1% Brain Tumor or Mass
  • Source: Aggregated and anonymized results from visits to the Buoy AI health assistant (check it out by clicking on “Take Quiz”).

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