
While steroids are effective in treating various health conditions, they can also have adverse effects on the body. One of the well-known side effects of steroid use is muscle weakness, which can cause significant disruptions in daily life. In addition, steroids have been linked to muscle cramps and spasms, particularly during the early stages of treatment or as a result of withdrawal. This is often associated with a depletion of potassium in the body, which is a crucial mineral for muscle function. Furthermore, steroid-induced myopathy, a condition causing muscle weakness and atrophy, has been observed in patients on chronic steroid therapy. While this condition is typically reversible through steroid tapering or alternative treatments, it underscores the complex relationship between steroids and muscle health. Understanding the full spectrum of steroid side effects is essential for informed decision-making and patient well-being.
| Characteristics | Values |
|---|---|
| Do steroids cause muscle spasms? | Yes, steroids can cause muscle spasms due to potassium depletion. |
| What are the other side effects of steroids? | Muscle weakness, pain, metabolic complications (obesity, diabetes, etc.), increased susceptibility to infection, gastritis, cataracts, glaucoma, and mood/neurocognitive side effects. |
| What can be done to alleviate the side effects? | Taper off steroids, switch to nonfluorinated glucocorticoids, alternate-day dosing, and physical therapy. |
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What You'll Learn

Corticosteroids weaken muscles and tendons
Corticosteroids have been associated with multiple adverse musculoskeletal reactions, including weakening muscles and tendons. This is known as corticosteroid-induced myopathy, a toxic noninflammatory myopathy caused by exogenous corticosteroid administration. It typically develops with doses higher than 10 mg prednisone equivalents/day used for four weeks or longer.
Myopathy can affect patients in the form of muscle weakness, causing difficulty in everyday life, such as climbing stairs or lifting objects. Usually, there is no muscle pain. Cortisone can also weaken the tendons, although symptoms are usually non-existent and tendon ruptures are rare. In addition, corticosteroids frequently cause cramps, particularly in the early stages of treatment, which commonly occur during the night and affect the hands and feet.
Studies have shown that 15-40% of patients treated with high doses of corticosteroids for several weeks reported muscle weakness specifically. This myopathy is usually moderate and improves slowly, but it may persist for several weeks after corticosteroids have been stopped. The risk of myopathy is low under 10 mg per day of prednisone or prednisolone, and short-term treatment with cortisone is less likely to cause myopathy symptoms.
To prevent and treat corticosteroid-induced myopathy, physical therapy in the form of resistance and aerobic exercise has been shown to be effective. Regular exercise can help quicken recovery. Other options include steroid withdrawal or switching from fluorinated to nonfluorinated glucocorticoids or alternate day dosing.
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Muscle spasms can be caused by prednisone withdrawal
While prednisone is a useful medication for treating various conditions, it is important to be aware of the potential side effects and withdrawal symptoms associated with its use. Prednisone is a synthetic steroid that mimics the effects of cortisol, an essential hormone produced by the adrenal glands that regulates vital functions such as heart rate and blood pressure.
When an individual takes prednisone for an extended period, their body adjusts by reducing its natural cortisol production. As a result, abruptly discontinuing prednisone can lead to a state of adrenal insufficiency, where the body cannot produce enough cortisol to compensate for the missing drug. This imbalance can trigger a range of withdrawal symptoms, including muscle spasms.
Muscle spasms are a known side effect of prednisone withdrawal. They can occur due to the sudden absence of the drug's muscle-relaxing properties. Additionally, prednisone can cause fluid retention, leading to electrolyte imbalances that may further contribute to muscle spasms. These spasms can be extremely painful and impact an individual's quality of life.
The risk of experiencing muscle spasms and other withdrawal symptoms is higher in individuals who have taken prednisone for a prolonged period or at higher doses. Therefore, it is crucial to gradually taper off prednisone under medical supervision to minimise the risk and severity of withdrawal symptoms. During the taper period, individuals may experience muscle aches and tiredness, which can be indicators of impending muscle spasms.
To manage prednisone withdrawal and alleviate muscle spasms, it is essential to consult a healthcare professional. Doctors may adjust the taper schedule or recommend lifestyle changes, such as regular exercise, to help manage symptoms. In some cases, they may prescribe physical therapy, including aerobic and resistance exercises, to improve muscle strength and reduce the severity of spasms.
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Steroids deplete potassium, causing muscle cramps
Steroids, such as prednisone, have been linked to muscle weakness and cramps. Prednisone is a commonly used drug for treating various diseases, but it can cause several side effects, including muscle weakness and joint pain. This muscle weakness is known as myopathy and can cause trouble with everyday activities like climbing stairs or lifting objects.
While the exact mechanism is unclear, one theory suggests that steroids deplete potassium levels in the body. Potassium is a critical mineral for maintaining fluid balance inside cells and proper nerve and muscle function. A delicate balance of potassium and sodium levels inside and outside the cell is necessary for nerve impulse transmission and muscle contractions. When steroids cause a decrease in potassium levels, it can lead to an imbalance in this delicate system, potentially resulting in muscle cramps.
Preliminary studies on patients with lung disease who were administered prednisone with and without potassium supplements showed no abnormalities in plasma potassium levels. However, there was a correlation between higher doses of prednisone and increased urinary excretion of potassium. This suggests that prolonged steroid treatment may disrupt potassium homeostasis in the body, which could be a contributing factor to muscle cramps.
It is important to note that not all patients taking steroids will experience the same side effects, and the impact on potassium levels and muscle function may vary. Additionally, other factors, such as diet, can play a role in maintaining potassium levels. Consuming foods rich in potassium, such as fruits, vegetables, beans, and almonds, can help mitigate potential depletion caused by steroid use.
If you are experiencing muscle cramps or other side effects while taking steroids, it is important to consult your healthcare provider. They may recommend nutritional adjustments, suggest alternative medications, or advise on appropriate management strategies to alleviate these adverse effects.
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Muscle weakness improves after steroid discontinuation
Steroid-induced myopathy is a common side effect of taking steroids, causing muscle weakness and cramps. This can be troublesome in everyday life, for example, climbing stairs or lifting heavy objects. Muscle weakness usually affects patients treated with high doses of steroids for several weeks. Studies have shown that 15-40% of patients treated with high doses of steroids for several weeks reported muscle weakness.
Corticosteroid-induced myopathy is almost always reversible, with improvement in myopathy within 3 to 4 weeks of tapering steroids, although recovery can take months to a year. Muscle weakness improves slowly after steroid discontinuation and may persist for several weeks. Other than steroid withdrawal, there are no known pharmacotherapies to accelerate recovery. However, switching from fluorinated glucocorticoids like dexamethasone to non-fluorinated glucocorticoids like prednisone can sometimes help. It is important to note that patients on chronic steroid therapy need to be weaned off slowly to avoid adrenal insufficiency or exacerbation of the disease being treated with steroids.
Physical therapy with aerobic and resistance exercises is effective at modulating muscle atrophy in patients with corticosteroid-induced myopathy. Even for patients unable to taper off steroids, a study of heart transplant recipients on chronic glucocorticoids found that a 6-month regimen of monitored resistance training successfully reversed corticosteroid-induced muscle atrophy and improved skeletal muscle strength by 400-600%. Regular exercise can also help quicken recovery after steroid discontinuation.
It is important to note that anabolic steroid abuse can have serious side effects and long-term health consequences, including cardiovascular disease, liver damage, brain damage, and infertility. Withdrawing from steroids can be challenging, and users may experience symptoms of low testosterone, as the body takes weeks to months to resume its natural testosterone production. A doctor-assisted detox, including cognitive behavioural therapy, can help manage withdrawal symptoms and address the underlying reasons for steroid use.
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Chronic steroid use can cause Cushing syndrome stigmata
Steroid-induced myopathy is a common side effect of steroid use, causing muscle weakness and cramps. While steroid-induced myopathy is reversible, it can take several weeks or even months for muscle weakness to improve after stopping steroids.
Chronic steroid use can cause Cushing syndrome, an uncommon condition that arises from excess cortisol in the body. Cushing syndrome is also known as hypercortisolism, and it can occur due to various reasons, including long-term exposure to corticosteroid medications. This form of Cushing syndrome is termed iatrogenic or exogenous Cushing syndrome.
Cortisol is a steroid hormone naturally produced by the adrenal glands, particularly during stressful events. It plays a crucial role in managing respiration, converting food into energy, regulating blood sugar, and helping the body cope with stress. While cortisol is essential for our body's functioning, excessive levels can lead to Cushing syndrome.
Chronic steroid therapy can result in Cushing syndrome stigmata, which includes signs such as moon facies and fat redistribution. Additionally, patients may experience metabolic complications like obesity, diabetes, adrenal insufficiency, hyperlipidemia, hypertension, osteoporosis, and avascular necrosis. Other complications associated with prolonged steroid use include increased susceptibility to infections, gastritis, cataracts, glaucoma, and mood/neurocognitive side effects.
The treatment for iatrogenic Cushing syndrome involves tapering off steroids slowly over several weeks or months. Abruptly stopping steroids can have adverse effects on the body. Healthcare providers closely monitor cortisol levels in patients on glucocorticoids or steroids to prevent and manage Cushing syndrome effectively.
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Frequently asked questions
Steroids can cause muscle spasms as they deplete the body of potassium, a deficiency of which can cause muscle cramps.
Other side effects of steroids include muscle and joint pain, metabolic complications (obesity, diabetes, hypertension, etc.), increased susceptibility to infection, gastritis, cataracts, glaucoma, and mood/neurocognitive side effects.
If you are taking steroids and experiencing muscle spasms, you should consult your doctor. They may recommend a tapering dose of steroids and check for other causes of muscle cramps, such as electrolyte problems.
Eating foods high in potassium, such as bananas, orange juice, raisins, spinach, and apricots, may help prevent muscle spasms caused by steroid use.
Yes, in addition to muscle spasms and the other side effects mentioned above, steroids can also cause muscle weakness and atrophy, which can be improved through physical therapy and exercise.




































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