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Learn about your swelling of one arm, including causes and common questions. Or get a personalized analysis of your swelling of one arm from our A.I. Symptom Checker. At Buoy, we build tools that help you know what’s wrong right now and how to get the right care.

Your Swelling of One Arm May Also be Known as:
Left bicep feels puffy
Left bicep feels swollen
Left bicep is puffy
Left bicep is swollen
Left bicep puffiness
Left bicep swelling
Left tricep feels puffy
Left tricep feels swollen
Left tricep is puffy
Left tricep is swollen

Top 4 Swelling of One Arm Causes

  1. 1.Bicep Bruise

    A bruise is the damage of the blood vessels that return blood to the heart (the capillaries and veins), which causes pooling of the blood. This explains the blue/purple color of most bruises. Bruises of the bicep are common due to minor injuries.

    You can treat this at home with R.I.C.E - rest (exercise as tolerated), ice (10-20 minutes at a time), compression (this is pretty optional), and elevation (difficult for this part of the body).

    Rarity:
    Rare
    Top Symptoms:
    constant upper arm pain, recent bicep injury, pain in one bicep, upper arm bruise, swelling of one arm
    Symptoms that always occur with bicep bruise:
    recent bicep injury, constant upper arm pain
    Urgency:
    Self-treatment
  2. 2.Bruised Tricep

    A bruise is the damage of the blood vessels that return blood to the heart (the capillaries and veins), which causes pooling of the blood. This explains the blue/purple color of most bruises. Bruises of the tricep are common, often due to minor injury.

    You can treat this at home with R.I.C.E - rest (exercise as tolerated), ice (10-20 minutes at a time), compression (this is pretty optional), and elevation (difficult for this part of the body).

    Rarity:
    Rare
    Top Symptoms:
    constant upper arm pain, tricep injury, pain in one tricep, upper arm bruise, swelling of one arm
    Symptoms that always occur with bruised tricep:
    tricep injury, constant upper arm pain
    Urgency:
    Self-treatment

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  3. 3.Compartment Syndrome

    Compartment syndrome is a serious condition that involves increased pressure in a muscle compartment. It can lead to muscle and nerve damage and problems with blood flow.

    Seek immediate care at an ER. A surgical intervention will be required to release the pressure in the compartment to avoid irreversible nerve and muscle damage.

    Rarity:
    Rare
    Top Symptoms:
    arm numbness, foot numbness, hand numbness, pain in one leg, thigh numbness
    Urgency:
    Hospital emergency room
  4. 4.Benign Bony Growth (Osteochondroma)

    An osteochondroma is a non-cancerous growth that usually develops during childhood or adolescence. It is a benign tumor that forms on the surface of a bone near the growth plate.

    You should visit your primary care physician for X-Ray evaluation. In most cases this condition is treated by careful observation over time to make sure the tumor does not grow. Surgery is considered if the osteochondroma causes pain, puts pressure on a nearby nerve or blood vessel, or has a large cap of cartilage.

    Rarity:
    Rare
    Top Symptoms:
    numbness in one arm, numbness in one thigh, swelling of one arm, hip deformity, swollen knee
    Urgency:
    Primary care doctor

Questions Your Doctor May Ask About Swelling of One Arm

  • Q.How long has your upper arm been swollen?
  • Q.Is your upper arm swelling constant or come-and-go?
  • Q.About your [upper arm], do you notice:
  • Q.Did you just suffer from a high impact injury (e.g., a fall or car accident)?

If you've answered yes to one or more of these questions, check our swelling of one arm symptom checker.

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Swelling of One Arm Symptom Checker Statistics

  • People who have experienced swelling of one arm have also experienced:

    • 7% Pain in One Arm
    • 7% Pain in One Shoulder
    • 3% Fatigue
  • People who have experienced swelling of one arm had symptoms persist for:

    • 32% Less Than a Week
    • 29% Over a Month
    • 21% Less Than a Day
  • People who have experienced swelling of one arm were most often matched with:

    • 14% Compartment Syndrome

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