Dominic Stone
Steroids come in many different forms and are often prescribed to treat autoimmune conditions, such as rheumatoid arthritis or lupus. While short-term use of steroids typically does not cause significant side effects, long-term use can suppress the immune system and lead to various adverse effects, including muscle pain and weakness, a condition known as steroid-induced myopathy. This condition is believed to be caused by the direct catabolic effect of steroids on muscle tissue, resulting in muscle atrophy and proximal muscle weakness. The risk factors for developing steroid-induced myopathy include prior muscle disease, chronic respiratory illness, poor nutrition, and a sedentary lifestyle. Treatment options include steroid withdrawal, switching to non-fluorinated glucocorticoids, and physical therapy involving resistance and aerobic exercises.
| Characteristics | Values |
|---|---|
| Type of steroids | Anti-inflammatory steroids (corticosteroids) such as prednisone, methylprednisolone, and dexamethasone |
| Types of side effects | Short-term: increased appetite, mood changes, difficulty sleeping (insomnia) |
| Long-term: muscle pain, muscle weakness, muscle atrophy, weight gain, increased risk of infection, metabolic complications, skin and bone disorders, etc. | |
| Treatment | Steroid withdrawal, switching from fluorinated to nonfluorinated glucocorticoids, physical therapy, alternate day dosing, etc. |
| Risk factors | Prior muscle disease, spinal cord injury, chronic respiratory illness, poor nutrition, sedentary lifestyle, etc. |
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What You'll Learn
Corticosteroid-induced myopathy
The condition typically affects pelvic girdle muscles and is associated with muscle weakness and atrophy without pain. The diagnosis of corticosteroid-induced myopathy requires a high index of suspicion and is confirmed when muscle weakness improves after 3 to 4 weeks of tapering steroids, although improvement may take months to a year. Corticosteroid-induced myopathy is often an overlooked diagnosis, as symptoms are sometimes attributed to the primary illness that the corticosteroid is treating. Additional risk factors for developing the condition include prior muscle disease or spinal cord injury, chronic respiratory illness, poor nutritional status, and a sedentary lifestyle. Women are more prone to developing corticosteroid-induced myopathy, although the reason for this is unclear.
Treatment for corticosteroid-induced myopathy involves prompt initiation of corticosteroid withdrawal, if possible. Other options include switching from fluorinated to nonfluorinated glucocorticoids or alternate-day dosing. Corticosteroid-induced myopathy is almost always reversible, with improvement in myopathy within 3 to 4 weeks of tapering corticosteroids, although recovery can take months to a year. Other than withdrawing corticosteroids, there are no known pharmacotherapies to accelerate recovery. Patients should be weaned off corticosteroids slowly to avoid adrenal insufficiency or exacerbation of the disease process for which they have been on long-term 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, resistance training can successfully reverse corticosteroid-induced muscle atrophy and improve skeletal muscle strength. Patients should be prescribed physical therapy as a preventive and treatment modality for this condition.
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Muscle atrophy
Prolonged use of steroids can lead to muscle pain and atrophy. Steroids, in this context, refer to anti-inflammatory steroids (corticosteroids) such as prednisone, methylprednisolone, dexamethasone, cortisone, and fludrocortisone. These are different from anabolic steroids, which are often misused by people aiming to increase their muscle mass.
Long-term use of corticosteroids can result in many side effects, including muscle pain and atrophy. This occurs through both catabolic and anti-anabolic mechanisms. Corticosteroids upregulate proteolytic systems, increasing the breakdown of myofibrillar proteins by dissociating actin from myosin. They also induce myocyte apoptosis and inhibit protein synthesis and myogenesis, leading to muscle atrophy.
The risk of developing corticosteroid-induced myopathy is higher in patients with prior muscle disease, spinal cord injury, chronic respiratory illness, poor nutrition, and a sedentary lifestyle. Women are also more prone to developing this condition, although the reason is unclear. The diagnosis of corticosteroid-induced myopathy requires a high index of suspicion and is confirmed when muscle weakness improves after tapering or discontinuing steroids.
Muscle pain and atrophy due to long-term steroid use can be managed and treated in several ways. The most effective treatment is to reduce or stop taking steroids, although this should be done gradually to avoid withdrawal symptoms such as fatigue, joint pain, muscle stiffness, and fever. Other treatments include switching to a different type of steroid, altering the dosage, and physical therapy with resistance and aerobic exercises.
Anabolic steroids, on the other hand, are medications that are manufactured forms of testosterone. They are commonly misused by athletes and bodybuilders aiming to increase muscle mass and improve performance. However, when used appropriately under medical supervision, anabolic steroids can be beneficial for people with muscle atrophy due to cancer or AIDS.
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Risk factors for myopathy
Corticosteroid-induced myopathy is a toxic non-inflammatory myopathy caused by exogenous corticosteroid administration. It is a highly prevalent condition that is believed to be caused by an excess of either endogenous or exogenous corticosteroids. Endogenous corticosteroid production can arise from adrenal tumours, while exogenous corticosteroid excess can result from steroid treatments for asthma, chronic obstructive pulmonary disease, and inflammatory processes such as polymyositis, connective tissue disorders, and rheumatoid arthritis.
The risk factors for corticosteroid-induced myopathy include patients with prior muscle disease or spinal cord injury, chronic respiratory illness, poor nutritional status, and a sedentary lifestyle. Women are more prone to developing this condition, although the mechanism behind this is not yet clear. Patients on mechanical ventilation who receive neuromuscular blockade with curare-like agents and high-dose steroids are also at high risk for developing acute steroid-induced myopathy, which may take weeks to recover from. Case reports indicate that even non-ventilated patients can experience acute early-onset steroid myopathy, even with moderate steroid doses.
The diagnosis of corticosteroid-induced myopathy requires a high index of suspicion and is confirmed when muscle weakness improves after 3 to 4 weeks of tapering steroids, although improvement may take months to a year. Treatment involves the reduction or discontinuation of corticosteroids, with close monitoring for adrenal insufficiency and exacerbation of the primary illness. Other treatment options include switching from fluorinated to non-fluorinated glucocorticoids, such as dexamethasone with prednisone or hydrocortisone, or alternate-day dosing.
Physical therapy, including aerobic and resistance exercises, is effective at modulating muscle atrophy in patients with corticosteroid-induced myopathy. Studies have shown that a regimen of monitored resistance training can successfully reverse corticosteroid-induced muscle atrophy and improve skeletal muscle strength. Additionally, patients should be educated on the risk versus benefit profile of corticosteroids and the potential for developing myopathy.
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Treatment options for myopathy
Prolonged use of steroids can result in many side effects, including myopathy, a toxic non-inflammatory myopathy caused by exogenous corticosteroid administration. Corticosteroid-induced myopathy is a highly prevalent condition that occurs as an adverse effect of prolonged oral or intravenous glucocorticoid use. It is believed to be caused by an excess of either endogenous or exogenous corticosteroids.
If you are experiencing muscle pain due to long-term steroid use, there are a few treatment options to consider:
- Steroid withdrawal: The first option is to taper off steroids slowly over a few weeks to avoid unpleasant withdrawal symptoms such as fatigue, joint pain, muscle stiffness, and fever. In some cases, rapid withdrawal can lead to a more severe syndrome of adrenal insufficiency, causing drops in blood pressure and chemical changes in the blood.
- Switching steroids: If stopping steroid use is not possible, an alternative is to switch from fluorinated glucocorticoids like dexamethasone to nonfluorinated glucocorticoids like prednisone.
- Alternate-day dosing: Another option is to alter the dosage by taking steroids every other day.
- Physical therapy: Physical therapy in the form of resistance and aerobic exercises has been shown to prevent and treat steroid-induced myopathy effectively. This includes low back and whole-body resistance exercises to improve skeletal muscle strength.
- Vaccinations: Long-term steroid use can suppress the immune system, so it is recommended to get yearly flu shots and discuss additional vaccinations such as Pneumovax and Prevnar 13 with your doctor.
- Experimental treatments: Some experimental treatments have been investigated, such as IGF-I, branched-chain amino acids, creatine, androgens, and glutamine. However, these have not been conclusively evaluated in humans and are not widely recommended.
- Adequate protein intake: Ensuring an adequate protein intake can help prevent the rapid acceleration of myopathy symptoms.
It is important to consult with a healthcare professional before making any changes to your steroid regimen or starting new treatments. They will be able to advise you based on your specific circumstances and health conditions.
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Side effects of steroid withdrawal
Steroid withdrawal can produce a wide range of symptoms, and its effects can be intense, affecting both the body and mind. The duration of withdrawal varies from person to person, lasting anywhere from a few days to several weeks or even months. The severity and duration of steroid withdrawal depend on the dosage and length of treatment.
When an individual takes steroids for an extended period, the adrenal glands decrease cortisol production. As a result, when someone stops taking steroids, their body experiences a sudden steroid shortage, leading to withdrawal symptoms until the body resumes producing sufficient cortisol. This process can take weeks or months, depending on the duration of steroid use and dosage.
Some common symptoms of steroid withdrawal include:
- Extreme fatigue
- Low appetite and weight loss
- Nausea and vomiting
- Joint and muscle pain
- Depression and anxiety
- Hormonal imbalances
To manage steroid withdrawal, it is crucial to work with a doctor to taper off steroids gradually. This process allows the body to adjust and the adrenal glands to resume normal cortisol production. Even with a tapered dose, individuals may experience mild symptoms for about one to two weeks. During this time, exercise, meditation, counselling, and physical therapy can help alleviate symptoms and address mental health issues.
In some cases, medical intervention is necessary to manage severe symptoms and ensure a safe withdrawal process. Detox is the first step towards healing, but it requires time and proper support for the body to recover and regain its natural balance.
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Frequently asked questions
Myopathy is a disease that causes muscle weakness, usually in the muscles of the arms, legs, and pelvis.
Myopathy is caused by an excess of endogenous or exogenous corticosteroids. Endogenous corticosteroids are produced by the body, while exogenous corticosteroids are administered through steroid treatments.
The symptoms of myopathy include muscle pain, muscle weakness, and muscle cramps. Patients may also experience Cushing's syndrome stigmata, such as a puffy, rounded face.
The only effective treatment for myopathy is to reduce or stop taking steroids. Physical therapy, including resistance and aerobic exercises, can also help prevent and treat steroid-induced myopathy.
Long-term steroid use can have various side effects, including increased appetite, weight gain, mood changes, difficulty sleeping, and a higher risk of infection due to a weakened immune system.
