Hypocalcaemia
Hypocalcaemia (ICD-10: E58, E64.8) est in medicina minor (hypo-) calcii concentratio (-calc(i)-) in sanguine (-aemia). Valores normales sunt 2.1–2.6 mmol/L (8.8–10.7 mg/dl, 4.3–5.2 mEq/L). Haec signum morbum indicare potest etenim differentiam oportet.

Signa et Symptomata 

 ocularia
 Papilloedema
 cerebralia
 perturbationes mentis
 Syndromae Parkinsonienses
 cutanea
 Petechiae et purpura
 muscularia
 Tetanus
 Myopathia

Differentia 

 Intestinum
 Malabsorptio - non raro cum diarrhoea
 Egestas vitamini D
 Pancreas
 Pancreatitis - cum dolore abdominis
 Parathyreoidea 
 Hypoparathyreoidismus - etiam post resectionem partium glandulae thyreoideae
 Pseudohypoparathyreoidismus
 Renes
 Insufficientia renalis - inderdum cum osteopathia renali
 Pseudohypocalcaemia
 Glucagon
 Musculi
 Rhabdomyolysis
 Medicamenta
 Inhibitores canalium calcii - dosibus altiis
 Biphosphonati (remedia osteoporosis)
 Cancer
 syndroma lysis tumoris - hyperphosphataemia causa

 Indicia morbi