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.
If you sit up or stand up too quickly, your blood pressure may drop and you may feel faint. Another common cause of lightheadedness is when the blood flow from the heart is not sufficient. There are certain conditions of the heart that may be responsible for this.