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Learn about your muscle stiffness/rigidity, including causes and common questions. Or get a personalized analysis of your muscle stiffness/rigidity 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 Muscle Stiffness / Rigidity May Also be Known as:
Muscle tightness
Rigid muscles
Spasticity
Stiff muscles
Tight muscle

Top 5 Muscle Stiffness / Rigidity Causes

  1. 1.Cerebral Palsy

    Cerebral palsy is a condition that results from damage to the developing brain, which usually occurs before the age of 3. The damage can be due to a variety of factors, and there is a lot of research that is still being carried out in this field. The damage to the brain causes problems such as motor deficits, epilepsy, failure to thrive, sleep disturbances, and many others.

    You should visit your primary care physician. This is a complex condition that is treated with a multidisciplinary approach. Allied medical professionals such as physical therapists, occupational therapists, speech therapists, and recreational therapists aid in the management of cerebral palsy.

    Rarity:
    Uncommon
    Top Symptoms:
    involuntary movements, mental disability, non-voluntary, brief, irregular dance-like movements, muscle stiffness/rigidity, slow, writhing, continuous movements
    Symptoms that always occur with cerebral palsy:
    mental disability
    Urgency:
    Primary care doctor
  2. 2.Malignant Hyperthermia

    Malignant hyperthermia is a rare life-threatening condition usually triggered by drugs like general anesthesia. In certain individuals, these drugs can cause a drastic increase in carbon dioxide, decrease in body temperature, muscle rigidity and ultimately death if not immediately treated.

    Call 911 for an ambulance now. This is a life-threatening condition that needs to be treated at the hospital.

    Rarity:
    Rare
    Top Symptoms:
    being severely ill, shortness of breath, severe fever, dark brown urine, muscle stiffness/rigidity
    Symptoms that always occur with malignant hyperthermia:
    being severely ill
    Urgency:
    Emergency medical service

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  3. 3.Canavan Disease

    Canavan disease is an extremely rare genetic disorder. It causes the brain to degenerate into spongy tissue with lots of tiny fluid-filled spaces. Usually this disease is discovered in the first 3 to 6 months of a person's life. It causes progressive destruction of the brain.

    You should visit your primary care physician to get consultation about this serious condition. Unfortunately there is no cure, and treatment is focused on support and symptom management.

    Rarity:
    Rare
    Top Symptoms:
    muscle stiffness/rigidity, developmental delay, moving less frequently, poor control of head movement, low muscle tone
    Urgency:
    Primary care doctor
  4. 4.Copper Deficiency

    Copper is a mineral that keeps the body healthy. The body doesn't need much copper; however, some people may not get enough in their diet.

    You should visit your primary care physician to confirm the diagnosis and discuss copper supplements.

    Rarity:
    Rare
    Top Symptoms:
    difficulty walking, muscle stiffness/rigidity, jerky, unsteady, or uncoordinated walk, sudden urgency to urinate, numbness in both thighs
    Urgency:
    Primary care doctor
  5. 5.Langerhans Cell Histiocytosis

    There are many different cells of the immune system. At times, there can be too many of one or more of them.

    You should visit your primary care physician within the next few days.

    Rarity:
    Rare
    Top Symptoms:
    fatigue, shortness of breath, fever, unintentional weight loss, severe fatigue
    Urgency:
    Primary care doctor

Questions Your Doctor May Ask About Muscle Stiffness / Rigidity

  • Q.Any fever today or during the last week?
  • Q.Have you been feeling more tired than usual, lethargic or fatigued despite sleeping a normal amount?
  • Q.Do you currently smoke?
  • Q.Have you experienced any nausea?

If you've answered yes to one or more of these questions, check our muscle stiffness/rigidity symptom checker.

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Muscle Stiffness / Rigidity Symptom Checker Statistics

  • People who have experienced muscle stiffness/rigidity have also experienced:

    • 4% Fatigue
    • 4% Muscle Aches
    • 4% Pain in One Shoulder
  • People who have experienced muscle stiffness/rigidity were most often matched with:

    • 5% Canavan Disease

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Try our muscle stiffness/rigidity symptom checker to diagnose your current condition

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Check my muscle stiffness/rigidity symptoms

Take a quiz to find out why you’re having muscle stiffness/rigidity symptoms

Check my symptoms