Cosentyx (secukinumab) is a biologic medication used to treat moderate to severe plaque psoriasis, psoriatic arthritis, and ankylosing spondylitis. It works by targeting a protein called interleukin-17A (IL-17A), which is responsible for causing inflammation in the body [3].

One of the most common side effects of Cosentyx is skin irritation at the injection site. According to a clinical trial study, the incidence of injection site reactions (ISRs) was higher in patients receiving Cosentyx than in those receiving a placebo [2]. However, the study also noted that the majority of ISRs were mild or moderate in severity and resolved within a few days without any intervention.

Another study conducted on patients with moderate to severe plaque psoriasis found that the most common adverse events were nasopharyngitis (inflammation of the nose and throat), headache, and injection site reactions. The study also reported that the incidence of severe adverse events was low, and there were no serious infections or deaths reported during the study [1].

In conclusion, while skin irritation at the injection site is a common side effect of Cosentyx, it is usually mild or moderate in severity and resolves within a few days without any intervention. However, it is important to speak with your healthcare provider if you experience any adverse reactions while taking Cosentyx.

Sources:
[1] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5013855/
[2] https://www.drugpatentwatch.com/p/biologics/tradename/COSENTYX
[3] https://www.cosentyx.com/plaque-psoriasis/how-cosentyx-works