Cocaine produces its stimulant effects primarily by blocking the reuptake of:

A 27-year-old man presents with low back pain that has gradually worsened over the past 8 months. He reports morning stiffness lasting approximately 90 minutes that improves after he bikes to work but worsens after prolonged sitting. He denies any specific injury. Which feature is most suggestive of inflammatory back pain associated with ankylosing spondylitis?

A mother brings her 10 month-old infant to the PCP office for a pre-travel visit. The family is planning a 2-week trip to visit relatives in New Delhi, India in 6 weeks. The infant is up to date on routine immunizations for age. The mother asks what additional vaccines and preventative measures are needed. Which of the following is the most appropriate pre-travel plan?   https://wwwnc.cdc.gov/travel

A 58-year-old woman presents with chronic hand pain. Which findings are most consistent with osteoarthritis rather than rheumatoid arthritis?   Select all that apply

A 72-year-old woman presents after sustaining a low-impact distal radius fracture from standing height. Her previous DEXA scan demonstrated osteopenia. Which statement is most accurate?

Researchers develop a medication that completely blocks proteolysis-inducing factor (PIF). Which complication of cachexia would most directly improve?

A patient presents with bleeding gums, petechiae, and poor wound healing. Which diagnosis is most likely?

A 48-year-old woman presents with neck pain radiating into the right arm with numbness of the thumb and index finger. Symptoms worsen when she extends her neck and rotates her head toward the affected side. What diagnosis is most likely?

Match each hormone with its cellular source:   

A patient with anorexia nervosa develops dizziness and palpitations. Laboratory studies reveal hypokalemia. Which complication is most concerning?