Key signature -. The flats and sharps at the beginning of each staff line indicating the key of music the piece is to be played. Klangfarbenmelodie -. The technique of altering the tone color of a single note or musical line by changing from one instrument to another in the middle of a note or line.
There are many diagnoses that do not have definitive tests used to determine them, or which can't be truly diagnosed until a patient has died (upon autopsy). In these cases, doctors must use combinations of symptoms, often vague symptoms, which can lead to a lack of diagnosis. The real medical problem may be highly unusual or not appropriate to the age of the patient. The doctor might not consider a diagnosis that is very rare, or very rare for that age of the patient.
Symptoms & Signs. Dizziness is a feeling of being lightheaded or woozy. Disturbances of the brain, gastrointestinal system, vision, and the vestibular system of the inner ear are known causes of dizziness. People often refer to dizziness as vertigo, unsteadiness, or lightheadedness.