What is the test for proving a prisoner has a serious medical need?

A medical need is serious "if the failure to treat the prisoner's condition could result in further significant injury or the 'unnecessary and wanton infliction of pain.'" McGuckin, 974 F.2d at 1059 (quoting Estelle, 429 U.S. at 104). By establishing the existence of a serious medical need, a prisoner satisfies the objective requirement for proving an Eighth Amendment violation. Farmer v. Brennan, 511 U.S. 825, 834 (1994).

If a prisoner establishes the existence of a serious medical need, he must then show that prison officials responded to the serious medical need with deliberate indifference. See Farmer, 511 U.S. at 834. In general, deliberate indifference may be shown when prison officials deny, delay, or intentionally interfere with medical treatment, or may be shown by the way in which prison officials provide medical care. Hutchinson v. United States, 838 F.2d 390, 393-94 (9th Cir. 1988).