Orbital or Ocular Myositis (OM) is an extremely rare autoimmune disorder which affects the extraocular muscles of the eye, which are muscles that control eye movement. Ocular Myositis frequently manifests with orbital pain and diplopia (double vision).
While OM has no one known cause, there have been cases which have been associated with a variety of non-infectious diseases such as Lupus SLE, Crohn’s disease, and infections of the upper respiratory tract and sinus.
Possible infectious causes for Orbital Myositis have been reported and may include Herpes Zoster, Lyme disease, and Cystercercosis, a rare parasitic infection.
OM primarily impacts young to middle-aged adult women.
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