Side effects of Dysport/Botox include: temporary paralysis of surrounding muscles where injection is given such as drooping of the eye lids, overflow of tears, difficulty in closing the eye, difficulty in swallowing. Other side effects include general weakness, drowsiness, numbness, stiffness, double vision, difficulty in breathing, fever and flu-like symptoms, head tremor, difficulty in speaking and dry mouth. Some side effects can stay for 3 months or more.
The drug is approved for use only in post-stroke arms spasticity, spasmodic torticollis, hemifacial spasm and dynamic equinus foot deformity in children.
It is often misused to remove wrinkles (crow feat). Patients are oblivious of side effects. Maximum duration of effect: 3 months.