Meningitis
Encephalitis
Meningoencephalitis
Congestive Heart Failure
Space-occupying lesions
Thyroid disorders
Intracranial Hemorrhage
Parathyroid disorders
Brain Abscess
Diabetic Ketoacidosis
Hypervitaminosis A
Anemia
Lead encephalopathy
Leukemia
Inborn errors of metabolism
Uremia
Trauma
Roseola Infantum
Vaccinations
Shigella
Idiopathic Intracranial Hypertension (Pseudotumor Cerebri)
Dural sinus thrombosis
Viral syndromes
Hydrocephalus
Bulging fontanelle
Meningitis
Periorbital swelling
Encephalitis
Stridor
Meningoencephalitis
Stridor 
Congestive Heart Failure