MEMORANDUM **

Fernando Arnulfo Trejo, III, an Arizona state prisoner, appeals pro se from the *424 district court’s summary judgment in his 42 U.S.C. § 1983 action alleging deliberate indifference to his serious medical needs. We have jurisdiction under 28 U.S.C. § 1291. We review de novo, Toguchi v. Chung, 391 F.3d 1051, 1056 (9th Cir. 2004), and we affirm.

The district court properly granted summary judgment because Trejo failed to raise a genuine dispute of material fact as to whether Wohler was deliberately indifferent by changing Trejo’s medication, and then re-prescribing Trejo’s original medication six months later due to the side effects of the new medication. See Farmer v. Brennan, 511 U.S. 825, 837, 114 S.Ct. 1970, 128 L.Ed.2d 811 (1994) (a prison official is deliberately indifferent only if he or she “knows of and disregards an excessive risk to inmate health”); Toguchi, 391 F.3d at 1058-60 (neither a difference of opinion concerning the course of treatment nor negligence in treating a medical condition amounts to deliberate indifference); Jackson v. McIntosh, 90 F.3d 330, 332 (9th Cir. 1996) (a plaintiff “must show that the course of treatment the doctor[ ] chose was medically unacceptable under the circumstances”).

The district court did not abuse its discretion by denying Trejo’s application for appointment of counsel because Trejo failed to demonstrate exceptional circumstances. See Palmer v. Valdez, 560 F.3d 965, 970 (9th Cir. 2009) (setting forth standard of review and requirement of “exceptional circumstances” for appointment of counsel).

We do not consider arguments and allegations raised for the first time on appeal. See Padgett v. Wright, 587 F.3d 983, 985 n. 2 (9th Cir. 2009) (per curiam).

AFFIRMED.