Bickerstaff's encephalitis is a rare inflammatory disorder of the central nervous system, first described by Edwin Bickerstaff in 1951. It may also affect the peripheral nervous system, and has features in common with both Miller Fisher syndrome and GuillainâBarrÃ© syndrome. 1  1 Signs and symptoms.  2 Pathophysiology.
Pathophysiology. Tears are produced in the lacrimal gland and drain through the upper and lower puncta into the canaliculi and then into the lacrimal sac and nasolacrimal duct (see Figure: Anatomy of the lacrimal system. ). Obstruction of tear drainage can lead to stasis and infection.
It is a blockage of the tear drainage system. The tears drain from the eye into the nose. There is an opening of the drainage system on the medial portion of the eyelids called the puncta.The canaliculi (canals or ducts) drain the tears into the lacrimal sac between the eyelids and nose. The tears flow from the lacrimal sac into the nose.t is a blockage of the tear drainage system. The tears drain from the eye into the nose. There is an opening of the drainage system on the medial portion of the eyelids called the puncta.