To describe the natural history of a condition or disease. To describe the natural history of a condition or disease. To determine effectiveness or cost effectiveness of treatments/services and/or health care products. To measure or monitor safety and harm. To measure quality of care.
According to the NMSS, attacks or flare-ups of symptoms only qualify as exacerbations if: 1  they occur at least 30 days from an earlier flare-up. 2  symptoms last for 24 hours or longer.
The drooping eyelid syndrome is not permanent. It will most likely wear off before the Botox does. If eyelid drooping starts three to four days after the injection, it will most likely last three to six weeks. If the drooping begins four to six days after the injection, it should go away faster. In the time it takes to wear off, the doctor might prescribe a medication by way of an eye drop that may reduce the drooping. [/DDET]