Hyperparathyroidism - Primary vs Secondary vs Tertiary Lab Comparison: • Primary Hyperparathyroidism: ↑→PTH, ↑Calcium, ↑Vitamin D, ↓Phosphate • Secondary Hyperparathyroidism: ↑PTH, ↓→Calcium, ↓Vitamin D, ↑↓Phosphate • Tertiary Hyperparathyroidism: ↑↑PTH, ↑Calcium, ↓Vitamin D, ↑Phosphate Physical Symptoms: Commonly no signs, Fragile bones/osteoporosis, Kidney stones, Excessive urination, Abdominal pain, Tiring easily/weakness, Bone/joint pain Psychiatric Symptoms: Disorientation, Delirium, Confusion, Paranoia, Hallucinations, Forgetfulness, Alteration in hunger/sexuality Satyendra Dhar, MD @DharSaty #Hyperparathyroidism #diagnosis #endocrinology #PTH #Primary #Secondary #Tertiary #pathophysiology