What is the test for deliberate indifference in medical cases?

The test for deliberate indifference is two-pronged and has objective and subjective components. See Wilhelm v. Rotman, 680 F.3d 1113, 1122 (9th Cir. 2012). To establish such a claim, a prisoner must first "show a serious medical need by demonstrating that failure to treat [the] prisoner's condition could result in further significant injury or the unnecessary and wanton infliction of pain. Second, the plaintiff must show the defendants' response to the need was deliberately indifferent." Id. (internal quotation marks and citation omitted).

As to the first, objective prong, "[i]ndications that a plaintiff has a serious medical need include '[t]he existence of an injury that a reasonable doctor or patient would find important and worthy of comment or treatment; the presence of a medical condition that significantly affects an individual's daily activities; or the existence of chronic and substantial pain.'" Colwell v. Bannister, 763 F.3d 1060, 1066 (9th Cir. 2014) (citation omitted).

As to the second, subjective prong, deliberate indifference "describes a state of mind more blameworthy than negligence" and "requires more than ordinary lack of due care for the prisoner's interests or safety." Farmer v. Brennan, 511 U.S. 825, 835 (1994) (internal quotation marks and citation omitted). Deliberate indifference exists where a prison official "knows that [an] inmate[] face[s] a substantial risk of serious harm and disregards that risk by failing to take reasonable measures to abate it." Id. at 847. In medical cases, this requires showing, "(a) a purposeful act or failure to respond to a prisoner's pain or possible medical need and (b) harm

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