Sorry to hear you are in a flare...I use Dilaudid for break through pain relief . I think you will find everyone is different and how we respond to medications will differ as well . I have gone through trials with quite a few of the "normal" meds for RSD and had unique responses to most , from vision problems to hallucinations . As for the Dilaudid it does help when I am in a bad flare , but that is me . Hope you find the right fit for you ! Take care and hope you are on the upswing and are feeling better soon .