Before the introduction of routine measurements of serum calcium in ambulatory services, PHTP (primary hyperparathyroidism) was symptomatic with classic bone disease (known as osteitis fibrosa cystica) nephrolithiasis, and acute neuropsychiatric syndrome with severe hypercalcemia. Currently, PHPT presents few unspecific symptoms. This cross-sectional study was conducted from December 1, 2007, through August 31, 2008 to estimate the prevalence of primary hyperparathyroidism and to describe the clinical and laboratory characteristics of patients receiving ambulatory care. From 4207 patients, we found a prevalence of PHTP of 0.78 (95% confidence interval [CI], 0.52–1.04) of which 81.8% were asymptomatic and 18.2% symptomatic. The female:male ratio was 7.2:1, and 89.7% of the women were postmenopausal. Mean age was 61.12 ± 15.73 years, mean serum calcium was 10.63 ± 1.33 mg/dL, and mean serum parathyroid hormone (PTH) was 182.48 ± 326.51 pg/mL. We found a high prevalence of PHTP at reference centers and a high prevalence of hypertension and type 2 diabetes.

Objective: To describe the non-classical manifestations and quality of life in patients with primary hyperparathyroidism (PHPT). Subjects and methods: We evaluated non-classical manifestations and quality of life of 22 patients with PHPT using the SF-36 questionnaire according to the time since diagnosis. Results: In the scores of quality of life, a significant difference was found comparing the groups with previous and recent diagnosis of PHPT in terms of functional capacity (39 + 22.83 vs. 76.25 + 22.37 RESUMOObjetivo: Descrever as manifestações não clássicas e a qualidade de vida em pacientes com hiperparatireoidismo primário (HPTP). Sujeitos e métodos: Avaliamos as manifestações não clássicas e a qualidade de vida em 22 pacientes com HPTP por meio do questionário SF-36, segundo o tempo desde o diagnóstico. Resultados: Nos escores de qualidade de vida, foi observada uma diferença significativa na comparação dos grupos com diagnóstico anterior ou recente de HPTP em termos de capacidade funcional (39 + 22,83 vs. 76,25 + 22,37; p = 0,001), limitação de aspectos físicos (30 + 38,73 vs. 75 + 21,32; p = 0,006), estado geral de saúde (57,20 + 19,16 vs. 77,75 + 15,70; p = 0,012) e vitalidade (49,00 + 21,19 vs. 70,00 + 24,12; p = 0,044