A 64-year-old man presents to the clinic with generalized pain in his neck, shoulders, and hips. He states the pain is worse in the mornings and is sometimes associated with one-sided headaches. His erythrocyte sedimentation rate and C-reactive protein are both elevated. You diagnose him with polymyalgia rheumatica. What other condition would you suspect in this patient? A. Fibromyalgia
B. Giant cell arteritis
C. Systemic lupus erythematosus
D. Trigeminal neuralgia