Sickle Cell Disease (SCD) is an inherited disease that can cause sudden and severe pain. Pain management involves the use of analgesic medications. Often, providers are reluctant to follow evidence-based guidelines fo analgesic treatment for various reasons and some patients with SCD perceive they are treated differently from other patients. To understand the causes and solutions for this potential discordance, the first step is establishing a way to measure concordance of perceptions within the fast paced Emergency Department (ED) environment. The purpose of this study is to determine the feasibility of developing a process to measure concordance of perceptions between the patient with SCD and their ED provider after an interaction in the ED.