- Rare disease
A rare disease, also referred to as an orphan disease, is any disease that affects a small percentage of the population.
Most rare diseases are genetic, and are present throughout a person's entire life, even if symptoms do not immediately appear. In Europe a disease or disorder is defined as rare when it affects less than 1 in 2000 citizens.
Rare diseases are characterised by a wide diversity of symptoms and signs that vary not only from disease to disease but also from patient to patient suffering from the same disease.
Relatively common symptoms can hide underlying rare diseases, leading to misdiagnosis.
Source: EURORDIS website
Physical medicine and rehabilitation, also known as physiatry, is a branch of medicine that aims to enhance and restore functional ability and quality of life to those with physical impairments or disabilities. A physician having completed training in this field may be referred to as a physiatrist. Physiatrists specialize in restoring optimal function to people with injuries to the muscles, bones, ligaments, or nervous system.
- Rehabilitation engineering
Rehabilitation engineering is the systematic application of engineering sciences to design, develop, adapt, test, evaluate, apply, and distribute technological solutions to problems confronted by individuals with disabilities. These individuals may have experienced brain trauma caused from things such as PTSD, shock, near death experiences, drug induced brain alteration, panic anxiety, or other chemical imbalances. Functional areas addressed through rehabilitation engineering may include mobility, communications, hearing, vision, and cognition, and activities associated with employment, independent living, education, and integration into the community. Improving web access is also a field of interest. A rehabilitation engineer can also be called a rehabilitation engineering technologist.
- Retinitis pigmentosa
Retinitis pigmentosa (RP) is a genetic disorder of the eyes that causes loss of vision. Symptoms include trouble seeing at night and decreased peripheral vision (side vision). Onset of symptoms is generally gradual. As peripheral vision worsens, people may experience "tunnel vision". Complete blindness is uncommon.
- Return on investment
Return on investment (ROI) is the concept of an investment of some resource yielding a benefit to the investor. A high ROI means the investment gains compare favorably to investment cost. As a performance measure, ROI is used to evaluate the efficiency of an investment or to compare the efficiency of a number of different investments. In purely economic terms, it is one way of considering profits in relation to capital invested.
Source: Wikipedia (http://en.wikipedia.org/wiki/Return_on_investment)