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Each bubble is a syndrome; size reflects symptom count and links connect syndromes that share symptoms. Filter by specialty and tune the overlap threshold.
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All syndromes
931
Cardiology
Nutcracker syndrome
Compression of the left renal vein between aorta and superior mesenteric artery.
Ophthalmology Nystagmus blockage syndrome
Esotropia with nystagmus that dampens in adduction.
Cardiology Obesity hypoventilation syndrome
Obesity with daytime hypercapnia and cardiac strain.
Pulmonology Obstructive sleep apnea syndrome
Recurrent upper airway collapse during sleep.
Urology Ochoa syndrome
Abnormal facial expression on smiling with bladder dysfunction.
Ophthalmology Ocular ischemic syndrome
Chronic hypoperfusion from carotid stenosis.
Dentistry Oculodentodigital dysplasia syndrome
Small eyes, enamel defects and syndactyly.
Gastroenterology Ogilvie syndrome
Acute colonic dilation without mechanical obstruction.
Neurology Ohtahara syndrome
Earliest-onset developmental and epileptic encephalopathy, with tonic spasms and a suppression-burst EEG pattern.
Nephrology Okihiro syndrome
Duane anomaly with radial ray defects and renal anomalies.
Neurology Olfactory reference syndrome with neurological differential
Persistent belief of emitting body odor.
Dermatology Olmsted syndrome
Mutilating palmoplantar keratoderma with periorificial keratotic plaques.
Hematology Omenn syndrome
Leaky SCID with erythroderma, eosinophilia and lymphadenopathy.
Neurology Opalski syndrome
Wallenberg syndrome with ipsilateral hemiparesis.
ENT Opitz G/BBB syndrome
Hypertelorism, hypospadias and laryngotracheoesophageal anomalies.
Genetics Opitz–Kaveggia syndrome
X-linked intellectual disability with macrocephaly and imperforate anus.
Oncology Opsoclonus–myoclonus syndrome
Opsoclonus, myoclonus and ataxia, often paraneoplastic in children.
Immunology Oral allergy syndrome
Oral itching after eating raw fruit and vegetables in pollen allergy.
Ophthalmology Orbital apex syndrome
Superior orbital fissure syndrome plus optic neuropathy.
Pulmonology Organic dust toxic syndrome
Flu-like illness after heavy exposure to organic dust.
Nephrology Orofaciodigital syndrome type 1
X-linked dominant ciliopathy with oral, facial and digital anomalies and renal cysts.
Neurology Oromandibular dystonia
Focal dystonia of the jaw, face and tongue.
Cardiology Ortner syndrome
Hoarseness from left recurrent laryngeal nerve compression by an enlarged heart structure.
Orthopedics Os trigonum syndrome
Posterior ankle pain from an accessory bone.