<unk>  is a common and often unpleasant sensation of dizziness and/or feeling that one may be about to  faint, which may be transient, recurrent, or occasionally chronic.  In some cases, the individual may feel as though his or her head is weightless. It can be simply an indication of a temporary shortage of blood or oxygen to the brain, low blood pressure, low blood sugar, or anemia. It can also be a symptom of many other conditions, some of them serious, such as heart disease, stroke, or bleeding.<unk> , a specific type of dizziness, is a major symptom of a balance disorder. It is the sensation of spinning or swaying while the body is stationary with respect to the earth or surroundings. There are two types of<unk> : subjective and objective. Subjective<unk>  is when a person feels a false sensation of movement. Objective<unk>  is when the surroundings will appear to move past a person's field of vision.
The effects of<unk>  may be slight. It can cause nausea and vomiting and, if severe, may give rise to difficulty with standing and walking.
The word<unk> " comes from the Latin "vertere", to turn + the suffix "-igo", a condition = a condition of turning about.
Lightheadedness and vertigo
Nausea and vomiting
Fever and rash  
Cough syncope
Morning headaches
Presyncope
Steatorrhea
Carotidynia