Can Botox cause ptosis or permanent muscle paralysis?

Botox relaxes the muscles, but the effect is not permanent, and even that you have not had it for the last 7 months, what you may notice is that the frontalis muscle is not as strong as use to be, because the muscle has not regain its full strength. The frontalis muscle is the only muscle that lifts the brows, so to avoid droopiness on the brows, avoid getting Botox in the frontalis muscle, and you can just get it done in the orbicularis oculi and corrugator muscles, that are muscles that pull down the brows, so your brows go up again.

Botox results are not permanent, and after many years of doing injections I suggest you speak to someone to evaluate your eyelids.  Best, Dr. Emer.

If you have been having Botox injections for years, at 7 months you may still have a Botox effect in the glabellar area but not in other areas.  An experienced cosmetic dermatologist or plastic surgeon can assess your muscle movement to determine if it is time for a Botox brow lift or if you have naturally developed droopy eyelids.  The effects of Botox can be long-lasting in some patients, but not permanent.