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Obsessive-Compulsive Disorder (OCD)
• Other psychiatric disorders in which obsessive thoughts occur (e.g., body dysmorphic disorder or phobias)
• Major depression, hypochondriasis, and several anxiety disorders with predominant obsessions or compulsions; however, in these disorders, the thoughts are not anxiety provoking or extremes of normal concern
• Delusions or psychosis, which may be mistaken for obsessive thoughts; distinguished from OCD in that the individual recognizes the ideas are not real
Optic Neuritis
• Inflammatory: sarcoidosis, systemic lupus erythematosus (SLE), Behçet’s syndrome, postinfectious, postvaccination
• Ischemic: giant cell arteritis, anterior and posterior ischemic optic neuropathies, diabetic papillopathy, branch or central retinal artery or vein occlusion