[Primary hyperparathyroidism with serum parathyroid hormone within the normal range].

Patients with primary hyperparathyroidism (PHPT) often suffer from muscle and bone pain, are often easily fatigued and may show depressive signs. We present a case of a 50 year-old man with PHPT with muscle pain and fatigue. After parathyroidectomy the symptoms resolved. Preoperatively he had a normal serum-parathyroid hormone (PTH) and an increased ionized serum-calcium. Postoperatively the PTH level increased, though still within the normal range.