What is the legal test for deliberate indifference in medical care cases?

The requirement of deliberate indifference is less stringent in medical needs cases than in other Eighth Amendment contexts because the responsibility to provide inmates with medical care does not generally conflict with competing penological concerns. See McGuckin, 974 F.2d at 1060. Thus, deference need not be given to the judgment of prison officials as to decisions concerning medical needs. See Hunt v. Dental Dep't, 865 F.2d 198, 200 (9th Cir. 1989). The complete denial of medical attention may constitute deliberate indifference. See Toussaint, 801 F.2d at 1111. Delay in providing medical treatment, or interference with medical treatment, may also constitute deliberate indifference. See Lopez, 203 F.3d at 1131. Where delay is alleged, however, the prisoner must also demonstrate that the delay led to further injury. See McGuckin, 974 F.2d at 1060.

Negligence in diagnosing or treating a medical condition does not, however, give rise to a claim under the Eighth Amendment. See Estelle, 429 U.S. at 106. Moreover, a difference of opinion between the prisoner and medical providers concerning the appropriate course of treatment does not give rise to an Eighth Amendment claim. See Jackson v. McIntosh, 90 F.3d 330, 332 (9th Cir. 1996).