
Cosentyx (secukinumab) is a prescription medicine used to treat moderate to severe plaque psoriasis, psoriatic arthritis, ankylosing spondylitis, non-radiographic axial spondyloarthritis, hidradenitis suppurativa, and enthesitis-related arthritis. It is also used to treat inflammatory bowel disease. While Cosentyx is effective in managing these conditions, it is important to be aware of its potential side effects, which can range from mild to severe. One of the common side effects of Cosentyx is muscle pain or muscle aches, along with other symptoms like fever, chills, cough, and weight loss. In some cases, more severe side effects may occur, including serious allergic reactions and severe skin reactions resembling eczema. It is crucial to consult a doctor immediately if any adverse reactions or persistent muscle pain is experienced while taking Cosentyx.
| Characteristics | Values |
|---|---|
| Muscle pain | A possible side effect of Cosentyx, along with fever, chills, sweats, cough, shortness of breath, weight loss, skin sores, stomach pain, diarrhea, burning during urination, and bloody mucus |
| Allergic reactions | Possible, ranging from mild to severe; mild symptoms include a rash, while severe symptoms include swelling and difficulty breathing |
| Serious side effects | May cause severe skin reactions, including eczema, which can lead to hospitalization; other serious side effects include rectal bleeding, severe stomach pain, and severe diarrhea |
| Common side effects | Infections, diarrhea, hives, cold symptoms, and upper respiratory tract infections |
| Bacterial, viral, and fungal infections | Esophageal candidiasis, tracheobronchial candidiasis, cutaneous aspergillosis, CMV gastroenteritis/colitis, herpes simplex encephalitis, and more |
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What You'll Learn

Cosentyx may cause serious skin reactions
Cosentyx (secukinumab) is a prescription medicine used to treat moderate to severe plaque psoriasis, psoriatic arthritis, ankylosing spondylitis, non-radiographic axial spondyloarthritis, hidradenitis suppurativa, and enthesitis-related arthritis. It is also used to treat people with inflammatory bowel disease (ulcerative colitis or Crohn's disease).
Cosentyx may also cause other serious side effects, including severe allergic reactions and serious infections. If you experience any signs of infection, such as fever, chills, sweats, muscle aches, cough, shortness of breath, weight loss, skin sores, stomach pain, diarrhea, or painful urination, you should contact your doctor right away.
It is important to note that this medicine may increase your risk of having serious side effects, and you should be closely monitored by your doctor while taking Cosentyx to check for any unwanted effects. If you are pregnant, planning to become pregnant, or breastfeeding, you should also consult your doctor before taking Cosentyx, as it is unknown whether it can harm your unborn baby or pass into breast milk.
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It can cause allergic reactions, mild or severe
Cosentyx (secukinumab) is a prescription medicine used to treat moderate to severe plaque psoriasis, psoriatic arthritis, ankylosing spondylitis, non-radiographic axial spondyloarthritis, hidradenitis suppurativa, and enthesitis-related arthritis. It can also cause a range of side effects, from mild to severe, including allergic reactions.
Mild allergic reactions may present as a rash. If you experience such symptoms, you should contact your doctor right away. They may suggest a treatment to manage your symptoms and determine whether you should continue using Cosentyx.
Severe allergic reactions can be life-threatening and require immediate medical attention. Symptoms may include swelling of the hands, face, mouth, throat, or tongue, as well as difficulty breathing or throat tightness, chest tightness, and skin rash or hives. If you experience any of these symptoms, call 911 or your local emergency number immediately.
Cosentyx may also cause serious skin reactions, including severe eczematous eruptions, dyshidrotic eczema, and erythroderma. These reactions can sometimes lead to hospitalization. If you develop a severe skin reaction, your doctor may temporarily stop your treatment with Cosentyx.
Cosentyx can also increase your risk of infections, including bacterial, viral, and fungal infections. Some people have developed serious infections while taking Cosentyx, including tuberculosis (TB). It is important to consult your doctor if you experience any signs of infection, such as fever, chills, cough, muscle pain, or skin sores.
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Muscle pain is a common side effect
Cosentyx (secukinumab) is a prescription medication used to treat various conditions, including plaque psoriasis, psoriatic arthritis, and ankylosing spondylitis. It is a medicine that affects the immune system and can increase the risk of serious side effects. While it is an effective treatment for many people, it is important to be aware of its potential side effects and how they can impact daily life.
Muscle pain is one of the most commonly reported side effects of Cosentyx. It can range from mild discomfort to more severe pain that interferes with daily activities. The pain may be localized to a specific muscle group or felt throughout the body. For some individuals, this side effect may be temporary and resolve within a few days or weeks. However, for others, it may persist or become chronic.
If you experience muscle pain while taking Cosentyx, it is important to consult your doctor or healthcare provider. They can assess your symptoms, rule out any other potential causes, and provide guidance on managing the pain. In some cases, they may recommend over-the-counter pain relievers or suggest adjusting the dosage or timing of your Cosentyx medication. It is crucial to follow your healthcare provider's instructions and not discontinue or adjust your medication without medical advice.
Additionally, there are some self-care measures that individuals taking Cosentyx can practice to help alleviate muscle pain. This includes staying hydrated, engaging in regular physical activity, and maintaining a consistent sleep schedule. Gentle stretching or yoga can also help to soothe sore muscles. However, it is always advisable to consult with your healthcare provider before starting any new exercise routine or self-care regimen while taking prescription medications.
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Cosentyx may cause infections
Cosentyx may cause serious side effects, including severe infections. If you experience any of the following symptoms of infection, call your doctor right away: fever, chills, sweats, muscle pain, cough, shortness of breath, bloody mucus, weight loss, skin sores, stomach pain, diarrhea, painful urination, or burning when you urinate.
Cosentyx may cause bacterial, viral, and fungal infections, including esophageal candidiasis, tracheobronchial candidiasis, cutaneous aspergillosis, CMV gastroenteritis/colitis, herpes simplex encephalitis, herpes simplex keratitis, Pneumocystis jirovecii pneumonia, hepatitis B virus reactivation, histoplasmosis, and toxoplasmosis.
Some people have had serious infections while taking Cosentyx, including tuberculosis (TB), and some have died from these infections. Your doctor should check you for TB before starting treatment with Cosentyx. If your doctor feels that you are at risk for TB, you may be treated with medicine for TB before and during your treatment with Cosentyx. Your doctor should monitor you closely for signs and symptoms of TB during treatment.
Cosentyx may also cause other serious side effects, including severe skin reactions that look like eczema, which can lead to hospitalization. Tell your doctor if you have any of the following symptoms: redness or rash, itching, small bumps or patches, dry skin, blisters on the hands or feet that ooze or become crusty, or skin peeling. Other common side effects include cold symptoms, diarrhea, and upper respiratory tract infections.
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Diarrhea is a common side effect
Diarrhea is listed as one of the most common side effects of Cosentyx, along with cold symptoms and upper respiratory tract infections. It is important to note that Cosentyx may also cause new cases of inflammatory bowel disease or "flare-ups" of existing inflammatory bowel disease, which can be serious. If you experience diarrhea while taking Cosentyx, it is important to monitor your symptoms and consult your doctor if they worsen or become severe. In addition, if you have inflammatory bowel disease, such as ulcerative colitis or Crohn's disease, it is crucial to inform your doctor if you develop diarrhea or other symptoms such as stomach pain or rectal bleeding.
The occurrence of diarrhea as a side effect of Cosentyx may be related to its impact on the immune system. Cosentyx can increase the risk of infections, including bacterial, viral, and fungal infections. Diarrhea can be a symptom of certain infections, such as CMV gastroenteritis/colitis, which is listed as a potential opportunistic infection associated with Cosentyx use. Therefore, if diarrhea persists or is accompanied by other concerning symptoms, it is important to seek medical advice to rule out any underlying infections or other complications.
It is worth noting that Cosentyx may also cause severe allergic reactions, including anaphylaxis, which can be life-threatening. While diarrhea is not typically associated with allergic reactions, it can sometimes be a symptom or a result of other related factors. If you experience diarrhea along with other symptoms such as a rash, itching, or difficulty breathing, it is crucial to seek immediate medical attention. Additionally, if you have any signs of infection, such as fever, chills, or muscle aches, you should consult your doctor right away, as these could be indicators of a more serious condition.
Overall, diarrhea is a well-documented and common side effect of Cosentyx. While it may not always be a cause for concern, it is important to remain vigilant and seek medical advice if symptoms persist, worsen, or are accompanied by other concerning symptoms. Each patient's experience with Cosentyx is unique, and some may be more susceptible to certain side effects than others. Therefore, it is always best to prioritize your health and well-being by staying in close communication with your healthcare provider.
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Frequently asked questions
Yes, Cosentyx is known to cause muscle pain as a side effect.
If you experience muscle pain after taking Cosentyx, it is recommended that you consult your doctor right away.
Cosentyx may cause other side effects such as fever, chills, cough, shortness of breath, weight loss, skin sores, stomach pain, diarrhea, and painful urination.
Yes, Cosentyx may cause serious side effects, including severe allergic reactions, severe skin reactions, and new cases of inflammatory bowel disease or "flare-ups".
If you experience serious side effects from Cosentyx, seek immediate medical attention. Call your doctor or local emergency services right away. Do not delay treatment.













