Hi , I am so sorry to hear about the challenges you've had with iron deficiency anemia since starting your Cosentyx infusions. That sounds incredibly frustrating and challenging! While I wasn't able to find any information about Cosentyx or other biologics causing anemia, it certainly is possible to experience anemia from the underlying condition of PsA. That being said, the anemia could also be a symptom of a new issue. It sounds like, given the fact that you've gotten some iron infusions, your doctors are aware of the anemia. Have they done any investigating to determine what might be causing the increase in anemia (and subsequent symptoms)? I also wanted to share these two articles from a couple of our health leaders about vitamin deficiency and PsA, https://psoriatic-arthritis.com/living/vitamin-deficiency and https://psoriatic-arthritis.com/living/calling-your-doctor. Please don't hesitate to keep advocating for yourself with your doctor, especially if even with the iron infusions your fatigue has not gotten any better. You deserve some answers and some relief! And, if you're comfortable, please keep us posted. Sending you gentle hugs. -- Warmly, Christine (Team Member)