Acute osteomyelitis refers to an infection which develops and peaks over a relatively short period of time. In children, acute osteomyelitis usually presents itself as pain in the affected bone, tenderness to pressure over the infected area, fever and chills.
Dizziness caused by psychiatric conditions. 1  Depression, anxiety, or panic disorder. 2  Hyperventilation is from breathing too fast or too deeply, usually from anxiety or metabolic disorders. 3  Somatization is the conversion of a mental illness, such as anxiety or depression, into physical symptoms.
One of the most common causes of symptoms like light-headedness, fainting, muscle weakness or tiredness is dehydration. This occurs when the body uses more fluids than are taken in or ingests diuretics that deplete the body of water. The body responds by lowering the blood pressure and slowing down kidney functions.