Hypercalcemia can result when too much calcium enters the extracellular fluid or when there is insufficient calcium excretion from the kidneys. Approximately 90% of cases of hypercalcemia are caused by malignancy or hyperparathyroidism.
There are many causes of a productive cough, such as: 1  Viral illnesses. 2  It is normal to have a productive cough when you have a common cold. 3  Coughing is often triggered by mucus that drains down the back of the throat. 4  Infections. 5  An infection of the lungs or upper airway passages can cause a cough.here are many causes of a nonproductive cough, such as: 1  Viral illnesses. 2  Bronchospasm. 3  Allergies. 4  Medicines called ACE inhibitors that are used to control high blood pressure. 5  Exposure to dust, fumes, and chemicals in the work environment. 6  Asthma. 7  Blockage of the airway by an inhaled object, such as food or a pill.
See a list of possible causes in order from the most common to the least. 1. Cough. A cough is a common reflex action that clears the throat of mucus or foreign irritants. Coughing to clear the throat is typically an infrequent action, although a number of conditions can cause more frequent bouts o... Read more Â».