Read below about weakness in one lower leg, including causes and common questions. Or get a personalized analysis of your weakness in one lower leg 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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A.I. Health Assistant Causes for Weakness in One Lower Leg

Updated on Aug. 29, 2018

The list below shows results from the use of our A.I. Health Assistant by Buoy users who experienced weakness in one lower leg. This list does not constitute medical advice.

  1. 1.Fibular Nerve Injury

    Fibular nerve injury can be caused by a wide range of factors, including trauma, surgery, weight loss, and others.

    1 Day

    Rarity:
    Uncommon
    Top Symptoms:
    pain in the distribution of fibular nerve, numbness in fibular nerve distribution, difficulty walking or weakness with foot dorsiflexion
    Urgency:
    Wait and watch
  2. 2.Herniated (Slipped) Disk in the Lower Back

    The backbone, or spine, is made up of 26 bones called vertebrae. In between the bones are soft disks filled with a jelly-like substance. These disks cushion the vertebrae and keep them in place. Although people talk about a slipped disk, nothing actually slips out of place. The outer shell of the disk ruptures, and the jelly-like substance bulges out. It may be pressing on a nerve, which is what causes the pain.A slipped disk is more likely to happen due to strain on the back, such as during heavy lifting, and older individuals are at higher risk.

    The pain associated with a slipped disk usually goes away within six weeks. If the pain lasts longer, consult a doctor. They may send you to see a back specialist for an MRI of your spine, and surgery may be considered.

    Rarity:
    Common
    Top Symptoms:
    lower back pain, moderate back pain, back pain that shoots down the leg, back pain that gets worse when sitting, leg weakness
    Urgency:
    Primary care doctor
  3. 3.Chronic Idiopathic Peripheral Neuropathy

    Nerve damage in the limbs can be caused by diabetes, toxic substances, immune system issues and low vitamin levels. However, in about one of every four cases no cause can be found and then the condition is called 'idiopathic'. Symptoms of nerve damage can be (burning) pain sensations, numbness, tingling and weakness in hands, feet or lower legs.

    This is a chronic condition.

    Rarity:
    Rare
    Top Symptoms:
    distal numbness, muscle aches, joint stiffness, numbness on both sides of body, loss of muscle mass
    Urgency:
    Primary care doctor
  4. 4.Calf Strain

    A strain, commonly called a "pulled muscle," is when a muscle becomes overstretched, and microscopic tears occur. A calf strain happens when one of the muscles on the back of the lower leg is pulled.

    With proper medical attention, this condition should completely resolve.

    Rarity:
    Common
    Top Symptoms:
    pain in one calf, moderate calf pain, calf pain, sports injury, soccer injury
    Symptoms that always occur with calf strain:
    pain in one calf
    Urgency:
    Self-treatment
  5. 5.Repetitive Strain Injury of the Calf

    Repetitive strain injury of the calf is caused by consistent repetitive use.

    Duplicate: Resolves with rest

    Rarity:
    Uncommon
    Top Symptoms:
    lower leg numbness, calf pain from overuse
    Symptoms that always occur with repetitive strain injury of the calf:
    calf pain from overuse
    Symptoms that never occur with repetitive strain injury of the calf:
    recent calf injury, severe calf pain
    Urgency:
    Self-treatment

    Weakness in One Lower Leg Checker

    Take a quiz to find out why you’re having weakness in one lower leg.

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  6. 6.Restless Legs Syndrome (Rls)

    Restless Legs Syndrome is a common condition characterized by an urge to move the legs in order to stop unpleasant sensations.

    RLS is a chronic and incurable condition, but many have their symptoms improve with treatment.

    Rarity:
    Common
    Top Symptoms:
    daytime sleepiness, trouble sleeping, tingling lower leg, restless legs, difficulty falling asleep
    Urgency:
    Primary care doctor
  7. 7.Diabetic Neuropathy

    Diabetic neuropathy is a condition where pain, numbness, weakness, and motor loss occur in the limbs due to the effects of diabetes on the nerves.

    Symptoms can last a lifetime.

    Rarity:
    Ultra rare
    Top Symptoms:
    anxiety, depressed mood, trouble sleeping, diarrhea, fatigue
    Urgency:
    Primary care doctor
  8. 8.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:
    dizziness, leg numbness, arm numbness, new headache, stiff neck
    Symptoms that never occur with stroke or tia (transient ischemic attack):
    bilateral weakness
    Urgency:
    Emergency medical service
  9. 9.Peripheral Arterial Disease (Pad)

    Peripheral artery disease (PAD) occurs when the big blood vessels, called arteries, become too narrow due to clumps of fat (called plaques) building up inside the walls. If arteries become too narrow, not enough oxygen and nutrients are delivered to the muscles, skin, and organs. The arteries in the legs are often affected first, as they are the furthest from the heart.At first, PAD has no symptoms. As it gets worse, leg pain is likely to develop, leading to cramps in the calf, thigh, foot, or buttock upon exercise. PAD can also increase the risk of a blood clot if a piece of plaque detaches, leading to serious complications such as a heart attack or stroke.Peripheral artery disease is much more common in smokers and in people with diabetes. High blood pressure, high cholesterol, being overweight, and not getting much exercise also can put one at higher risk.

    The prognosis of this disease is highly variable and depends heavily on habits, medical history, and genetics. Peripheral artery disease is a chronic non-life threatening condition. Managing the disease, however, is very important in reducing the risk for stroke and heart attacks, so make sure to follow-up with a physician.

    Rarity:
    Common
    Top Symptoms:
    leg numbness, spontaneous foot pain, decreased exercise tolerance, cold feet, thigh pain
    Symptoms that never occur with peripheral arterial disease (pad):
    calf pain from an injury, thigh pain from an injury
    Urgency:
    Primary care doctor
  10. 10.Multiple Sclerosis (Ms)

    Multiple sclerosis (MS) is a neurodegenerative disease in which the immune system attacks the myelin sheath. The myelin sheath is involved in carrying nerve signals so this damage causes interruptions in nerve signaling.

    This is a lifelong condition; however, treatment may be beneficial.

    Rarity:
    Rare
    Top Symptoms:
    severe fatigue, constipation, numbness, decreased sex drive, signs of optic neuritis
    Urgency:
    Primary care doctor

Questions Your Doctor May Ask About Weakness in One Lower Leg

  • Q.Do you currently smoke?
  • Q.Have you ever been diagnosed with diabetes?
  • Q.Did you just suffer from a high impact injury (e.g., a fall, collision, accident or sports trauma)?
  • Q.Do you have a history of high cholesterol?

If you've answered yes to one or more of these questions, try our weakness in one lower leg symptom checker to find out more.

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Weakness in One Lower Leg Symptom Checker Statistics

  • People who have experienced weakness in one lower leg have also experienced:

    • 5% Loss of Muscle Mass
    • 5% Foot Numbness
    • 5% Pain in One Calf
  • People who have experienced weakness in one lower leg had symptoms persist for:

    • 36% Over a Month
    • 23% Less Than a Day
    • 19% Less Than a Week
  • People who have experienced weakness in one lower leg were most often matched with:

    • 57% Chronic Idiopathic Peripheral Neuropathy
    • 42% Herniated (Slipped) Disk in the Lower Back
  • 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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