“…The importance of including individuals with sickle cell disease cannot be overemphasized, as they provide unique insight to the severity, evolution, and resolution of sickle cell disease-related complications. We can only speculate that the inclusion of individuals with sickle cell disease, particularly when defining acute pain episodes may have resulted in a broadening of the definition proposed by Ballas et al When asked to keep a daily diary, adults with sickle cell disease report having acute pain episodes 13% of the days, yet they only seek medical attention in 4% of the days [8]. However, each of the most frequently cited publications defining acute vasoocclusive pain episodes, including the new definition by Ballas et al, require a visit to a medical facility, Table II.…”