title: Periodic unilateral eyelid retraction in a pediatric patient:  some considerations on botulinum toxin as a temporary treatment option.
authors.forename: Rafael
authors.initials: R
authors.lastname: Denadai
authors.forename: Erika Malheiros
authors.initials: EM
authors.lastname: Bastos
mesh_terms: D005141:Eyelid Diseases / Q000209:etiology*; D005260:Female; D006801:Humans; D010507:Periodicity; D013035:Spasm / Q000209:etiology*