Diplegia, when used singularly, refers to paralysis affecting symmetrical parts of the body. This is different from hemiplegia which refers to spasticity restricted to one side of the body, paraplegia which refers to paralysis restricted to the legs and hip, and quadriplegia which requires the involvement of all four limbs but not necessarily symmetrical. Diplegia is the most common cause of crippling in children, specifically in children with cerebral palsy. Other causes may be due to injury of the spinal cord. There is no set course of progression for people with diplegia. Symptoms may get worse but the neurological part does not change. The primary parts of the brain that are affected by diplegia are the ventricles, fluid filled compartments in the brain, and the wiring from the center of the brain to the cerebral cortex. There is also usually some degeneration of the cerebral neurons, as well as problems in the upper motor neuron system. The term diplegia can refer to any bodily area, such as the face, arms, or legs. Facial diplegia
Facial diplegia refers to people with paralysis of both sides of their face. Bilateral occurs when the onset of the second side occurs within one month of the onset of the first side. Facial diplegia occurs in 50% of patients with Guillain–Barré syndrome. Facioscapulohumeral muscular dystrophy (FSHD) is the second most common adult-onset muscular dystrophy with facial weakness being a distinct feature of FSHD in over 90% of cases.
Parents suspecting diplegia should take their child to the doctor to potentially get an earlier diagnosis. Treatment and care
This is broken up by age categories. Different ages require different forms of treatment which may include: therapy, bracing, walkers, wheelchairs, and surgery. Currently the treatments for children are concentrated primarily on independent walking but instead a more independence-oriented therapeutic approach would be more beneficial. This way the child can still focus on walking but at the same time be taught to do things for themselves while using the best method of walking for them. This could include using a walker or wheelchair to get around and do things easier than focusing all the attention on walking so early. For people requiring surgery, distal hamstring lengthening is the most common operation performed because it reduces knee flexion and improves knee motion. Birth to 1 year
“This first year sees the development of many milestones, such as head control, reaching out for a toy, sitting, starting to vocalize sounds, and finger feeding.”  Most parents want their children to excel very fast, but there is a wide upper and lower range of development time for premature babies so its very hard to diagnose cerebral palsy or diplegia this early. The most common symptom of a child with diplegia is stiff lower extremities. This should become apparent by the six month mark which means he or she does not have severe diplegia.