Skyscape Web Viewer : MobileDDx™ - Differential Diagnosis Tool : Symptoms Index

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Obesity
Obscures angle of mandible
Obsessions
Obsessive-Compulsive Disorder
Obstruction of Large Intestine
Obstruction of Small Intestine
Obstructive Disease on PFTs
Obstructive Hepatobiliary Disease
Obstructive Sleep Apnea
Obstructive Uropathy
Occasional occurrence without bubo
Occipital and orbital headache
Occult GI Bleeding
Occult GI with anemia
Occurs with sleep
Ocular abnormalities
Ocular paralysis
Odynophagia Laryngitis Odynophagia Pericarditis Peritonsillar Abscess
Oily secretions on lid margins and/or lashes
Olfactory Dysfunction
Oligomenorrhea
Oligomenorrhea & Amenorrhea
Oliguria Cholera Disseminated Intravascular Coagulation Hypernatremia Nephrotic Syndrome Portal Hypertension Thrombotic Thrombocytopenic Purpura
Onset 12-48 hours after ingestion
Onset 4-14 days post injury
Onset may be stress related
Onset usually in 3rd decade
Onycholysis Onycholysis Photodermatitis
Oozing
Open comedones