Clinical manifestations of hypocalcemia
| General |
| Fatigue |
| Diaphoresis |
| Neuromuscular |
| Acral paresthesia |
| Perioral numbness |
| Muscle cramps and myalgias |
| Tonic muscle contractions |
| Carpopedal spasm (Trousseau sign) |
| Chvostek sign |
| Seizures |
| Respiratory |
| Bronchospasm |
| Laryngospasm |
| Ocular |
| Papilledema |
| Optic neuritis (rare) |
| Cardiovascular |
| Hypotension |
| Hypocontractility, heart failure |
| Ventricular tachycardia due to prolonged QT interval |
| Heart block, conduction abnormalities |
| Insensitivity to digitalis |
| Psychiatric |
| Anxiety, irritability |
| Depression |
| Confusion |
| Emotional instability |
| Hallucinations (rare) |
| Psychosis (rare) |
| Gastrointestinal |
| Anorexia |
| Abdominal cramps |
| Biliary colic |
| Gastric achlorhydria |
| Steatorrhea |
| Blood |
| Decreased prothrombin (impaired coagulation) |