There is no set course of progression for people with diplegia. No two people with spastic diplegia are exactly alike. Jacqueline Rose Freney was born in Brisbane, Queensland with cerebral palsy diplegia. The intelligence of a person with spastic diplegia is unaffected by the condition. The girl was disabled with what was known then as cerebral diplegia. There are several ways of getting diplegia in the arms. The treatment for facial diplegia depends on the underlying cause. The most common symptom of a child with diplegia is stiff lower extremities. The most common infectious cause of facial diplegia is Lyme disease. The most common cause of diplegia in the legs is cerebral palsy. It is the "one-sided version" of spastic diplegia. Most people with spastic diplegia are fully ambulatory and have a scissors gait. The most serious side effect of interferon is a spastic diplegia. Diplegia of the legs consists of paralysis of both legs. It is very common for people with cerebral palsy to have diplegia of the arms.