Although there are no clinical findings that are exclusive to multiple sclerosis (MS), but some are highly specific of the disease. Optic neuritis (ON) and Sensory symptoms are common initial features of MS (1, 2). Optic neuritis is an inflammation of the optic nerve that usually first occurs in young and in many cases are associated with multiple sclerosis (MS), also can occur in isolation. In cases involving multiple sclerosis, ON is often the first exhibition of chronic demyelinating process so that 15 to 75% of female patients primarily presenting with ON eventually develop MS (3-7).
Optic neuritis usually presented as acute or sub-acute unilateral eye pain with a relative afferent pupillary defect (Marcus Gunn pupil) (8). Sensory symptoms are generally termed as numbness, tin-gling, pins-and-needles, tightness, coldness, or swelling of the limbs or trunk (1, 2).
The earliest references to eye diseases and optic nerve dysfunction as a mechanism for vision loss are found in some Persian Medicine texts by Avi-cenna, Gorgani and Rhazes according to himself and Galen, Hippocrates and others (9-11).
They described eye's disorders in perception, mo-tion, and involving both and referred to inflammation of the optic nerve and various affec-tions of the optic nerve, including those resulting from "warmth, cold, humidity, and dryness" (12) and the afferent pupillary defect. They explained that we could detect pain and heaviness, "swel-ling" of the optic nerve.
All of them describe eye diseases in the special chapter of their textbooks or some physicians as Hunain Ibn Is-Haq and Ali Ibn Isa al-Kahhal in the major textbooks of ophthalmology (8).
New approach to sensory symptoms by Haly Abbas and Ibn Rushd
Ali ibn al-Abbas ahwazi or al-Majusi (died 982-994), also known as Haly Abbas, was a Persian physician and psychologist. He is most famous for the Kitab al-Maliki or Complete Book of the Medical Art, his textbook on medicine and psychology, and for been a skilled clinician (13).
Another great philosopher and physician, Aver-roes, an Andalusian Muslim polymath commonly known as Ibn Rushd (1126 - 1198), wrote a medi-cal encyclopedia called Kulliyat (in Latin: Colliget). He also made a compilation of the works of Ga-len, and wrote a commentary on the Canon of Medicine of Avicenna (14, 15).
Both of them in their books have the part of prin-ciples of evaluation and management of health and diseases. In the neurology, part of their books they have wrote sections about some neurologic disorders as other ancient traditional physicians as Greek, Islamic or Persian medicine.
But Haly Abbas and then Ibn Rushd was the first theorist that in the section of Sensory Disorders begins a new chapter entitled diseases pertaining to sensation of touch.
In these chapters not only they have described some sensory symptoms exactly as are defined in modern medicine, but also fascinatingly, in this passage, they describe the inflammation and obstruction of the optic nerve, a condition which today we clearly refer to optic neuritis (16-17).
When Haly Abbas describe etiology of "Khadar" Equal to paresthesia and hypesthesia gives the examples of how the nerves damaged. He says some obstructive or inflammatory reasons that can result peripheral paresthesia, may causes optic neuritis in the central nervous system (16).
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