Dr. McKinstry has a long experience using Botox dating back to the 1980s when it was approved only to treat blepharospasm. Blepharospasm is an involuntary twitching or spasms of all the eyelid muscles often leading to facial disfigurement or functional blindness if both eyes spasm shut. This can occur on one side in a condition called hemi-facial spasm. Botox relaxes the muscle twitches and spasms.
Botox is also used cosmetically to relax the frowning muscles between the eyebrows, horizontal creases in the forehead and the crow's feet or smile lines outside the eyes. Many patients who use Botox to diminish forehead creases also notice a relief from headache symptoms. Botox is metabolized in the body and is re-injected in most patients every three to six months, although some patients can go longer before they desire additional injections.