eMedicine - Hypercalcemia 
Provides an introduction, clinical differentials, treatment for this condition, medication, and follow-up.
http://www.emedicine.com/emerg/topic260.htmMedlinePlus: Hypercalcemia
Find the causes, risk factors, symptoms, complications, tests, and treatment for it.
http://www.nlm.nih.gov/medlineplus/ency/article/000365.htm
Hypercalcemia
Discusses this common life-threatening metabolic disorder associated with neoplastic diseases. Intended for use by doctors and other health care professionals.
http://www.meb.uni-bonn.de/cancer.gov/CDR0000062737.html
Postgraduate Medicine: Management of Hypercalcemia
Presents a diagnostic workup, therapeutic options for hyperparathyroidism, and other common causes.
http://www.postgradmed.com/issues/2004/05_04/inzucchi.htm
A Practical Approach to Hypercalcemia
Learn about the pathophysiology and clinical manifestations of this condition, by the American Academy of Family Physicians.
http://www.aafp.org/afp/20030501/1959.html
Approach to Hypercalcemia
Chapter four from Endotext provides a definition of this condition and discusses the physiology of calcium homeostasis. Includes the regulation of production and action of humoral mediators.
http://www.endotext.com/parathyroid/parathyroid4/parathyroidframe4.htm
