This occurrence is very indicative of alternating hemiplegia and as such those who display this are usually diagnosed with probable alternating hemiplegia. Fifth, indications of developmental delays, learning disability, or neurological irregularities are present. These issues may not be obvious in very young patients; however, it appears in almost all older patients. : 777  The final criteria before a diagnosis of alternating hemiplegia can be made is that all of these symptoms must not be due to another disorder. If the symptoms can be attributed to another disease or disorder, then a definitive diagnosis is difficult to make. : 778

Diagnosis of Webers syndrome
Webers syndrome is the only form of alternating hemiplegia that is somewhat easy to diagnose beyond the general criteria. Although Webers syndrome is rare, a child born with the disorder typically has a port-wine stain on the face around the eye. While the port-wine stain does not necessarily mean the child has Webers syndrome, if the port-wine stain involves the ophthalmic division of the trigeminal nerve than the likelihood of it being webers syndrome greatly increases. If a port-wine stain around the eye is found, the patient should be screened for intracranial leptomeningeal angiomatosis. Magnetic resonance imaging (MRI) can be used to determine the presence and severity while computed cranial tomography can be used to determine the effect. MRI is the preferred diagnostic test on children presenting with port-wine stain. Other imaging techniques can be used in addition to further determine the severity of the disorder.
The initial diagnosis is made based on the presence of neurologic and ophthalmic disease but the disease progresses differently in each patient so after initial diagnosis the patient should be monitored frequently in order to handle further complications resulting from the syndrome. Treatment
Medical treatment of hemiplegia can be separate into several different categories:: 779 
prophylactic treatment by avoiding triggers and long-term drug treatment
acute management of the episodes
management of the epilepsy
sleep as a management technique.Seizure trigger include exposure to cold, emotional stress, fatigue, bathing, hyperthermia/hypothermia, and upper respiratory infection. A drug called flunarizine, which is a calcium channel blocker can help to reduce the severity and the length of attacks of the paralysis. Flunarizine
Many children affected by alternating hemiplegia also have epilepsy. Seizures may occur during an attack but more often occur between attacks. Anti-epilepsy drugs are given to prevent or lessen the seizures, but the drugs often dont work and have severe side effects that require the patient to discontinue use. Flunarizine, which blocks calcium channels, is an antiepilepsy drugs used in 50% of patients, and has been shown to shorten the duration of attacks as well as reducing the severity of the attacks. While Flunarizine does not stop the attacks, it is most common drug prescribed to treat those with alternating hemiplegia. : 779

Sleep and diet
Sleep is also used as a management technique. An early indication of an episode is tiredness so medication such as melatonin or Buccal midazolam can be administered to induce sleep and avoid the episode.