What sort of problem is amyloidosis?

Protein deposition. Amyloidosis refers to the deposition of a type of protein into certain organs. There are different subtypes of amyloid proteins depending on the cause. Amyloidosis can be of hereditary, infectious, inflammatory and neoplastic types.
Amyloidosis. Amyloidosis refers to a variety of conditions whereby the body produces "bad proteins", denoted as amyloid proteins, which are abnormally deposited in organs and/or tissues and cause harm. Symptoms vary widely depending upon the organ in which the abnormal proteins build up. For more see: http://en.Wikipedia.Org/wiki/amyloidosis.