Read below about muscle stiffness/rigidity, including causes and common questions. Or get a personalized analysis of your muscle stiffness/rigidity 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.

A.I. Health Assistant

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

Take a quiz

5 Potential Muscle Stiffness / Rigidity 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.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.

    Cerebral palsy is a chronic condition with no cure, but most patients have a mild form of the disease and will not have a shortened life expectancy.

    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.

    Treatment in the ICU lasts for at least 36 hours until you are stable

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

    Muscle Stiffness / Rigidity Checker

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

    Take a quiz
  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.

    Prognosis is very poor.

    Rarity:
    Rare
    Top Symptoms:
    muscle stiffness/rigidity, developmental delay, moving less frequently, low muscle tone, poor control of head movement
    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.

    Days with treatment

    Rarity:
    Rare
    Top Symptoms:
    sudden urgency to urinate, difficulty walking, numbness in both hands, muscle stiffness/rigidity, 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.

    Uncertain

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

Questions Your Doctor May Ask About Muscle Stiffness / Rigidity

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

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

Take a quiz

Muscle Stiffness / Rigidity Symptom Checker Statistics

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

    • 5% Muscle Aches
    • 4% Lower Back Pain
    • 4% Fatigue
  • People who have experienced muscle stiffness/rigidity were most often matched with:

    • 5% Canavan Disease
  • Source: Aggregated and anonymized results from visits to the Buoy AI health assistant (check it out by clicking on “Take Quiz”).

A.I. Health Assistant

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

Take a quiz