Estelle v. Gamble obligates prisons to provide for the serious medical needs of their inmates.[7] However, it also requires that an incarcerated person must demonstrate that they had a serious medical need, and that they didn't receive adequate medical care because officials showed "deliberate indifference." Due to the difficulty inherent in proving that a prison official knew about a medical condition, yet failed to respond to it, this standard makes it difficult to hold correctional facilities accountable for their mistakes.[3]