Terminology Service < Semantic Lookup Platform

All individuals in MESHD

Label	Id	Description
Ophthalmoplegic Migraine	D060486	[Childhood-onset of recurrent headaches with an oculomotor cranial nerve palsy. Typically, ABDUCENS NERVE; OCULOMOTOR NERVE; and TROCHLEAR NERVE are involved with DIPLOPIA and BLEPHAROPTOSIS.]
Opioid-Related Disorders	D009293	[Disorders related to or resulting from abuse or misuse of OPIOIDS.]
Opisthorchiasis	D009889	[Infection with flukes of the genus Opisthorchis.]
Opium Dependence	D000074607	[Strong physiological and emotional dependence on OPIUM.]
Opportunistic Infections	D009894	[An infection caused by an organism which becomes pathogenic under certain conditions, e.g., during immunosuppression.]
Opsoclonus-Myoclonus Syndrome	D053578	[A neurological condition that is characterized by uncontrolled rapid irregular movements of the eye (OPSOCLONUS) and the muscle (MYOCLONUS) causing unsteady, trembling gait. It is also known as dancing eyes-dancing feet syndrome and is often associated with neoplasms, viral infections, or autoimmune disorders involving the nervous system.]
Optic Atrophies, Hereditary	D015418	[Hereditary conditions that feature progressive visual loss in association with optic atrophy. Relatively common forms include autosomal dominant optic atrophy (OPTIC ATROPHY, AUTOSOMAL DOMINANT) and Leber hereditary optic atrophy (OPTIC ATROPHY, HEREDITARY, LEBER).]
Optic Atrophy	D009896	[Atrophy of the optic disk which may be congenital or acquired. This condition indicates a deficiency in the number of nerve fibers which arise in the RETINA and converge to form the OPTIC DISK; OPTIC NERVE; OPTIC CHIASM; and optic tracts. GLAUCOMA; ISCHEMIA; inflammation, a chronic elevation of intracranial pressure, toxins, optic nerve compression, and inherited conditions (see OPTIC ATROPHIES, HEREDITARY) are relatively common causes of this condition.]
Optic Atrophy, Autosomal Dominant	D029241	[Dominant optic atrophy is a hereditary optic neuropathy causing decreased visual acuity, color vision deficits, a centrocecal scotoma, and optic nerve pallor (Hum. Genet. 1998; 102: 79-86). Mutations leading to this condition have been mapped to the OPA1 gene at chromosome 3q28-q29. OPA1 codes for a dynamin-related GTPase that localizes to mitochondria.]
Optic Atrophy, Hereditary, Leber	D029242	[A maternally linked genetic disorder that presents in mid-life as acute or subacute central vision loss leading to central scotoma and blindness. The disease has been associated with missense mutations in the mtDNA, in genes for Complex I, III, and IV polypeptides, that can act autonomously or in association with each other to cause the disease. (from Online Mendelian Inheritance in Man, http://www.ncbi.nlm.nih.gov/Omim/, MIM#535000 (April 17, 2001))]
Optic Disk Drusen	D015594	[Optic disk bodies composed primarily of acid mucopolysaccharides that may produce pseudopapilledema (elevation of the optic disk without associated INTRACRANIAL HYPERTENSION) and visual field deficits. Drusen may also occur in the retina (see RETINAL DRUSEN). (Miller et al., Clinical Neuro-Ophthalmology, 4th ed, p355)]
Optic Nerve Diseases	D009901	[Conditions which produce injury or dysfunction of the second cranial or optic nerve, which is generally considered a component of the central nervous system. Damage to optic nerve fibers may occur at or near their origin in the retina, at the optic disk, or in the nerve, optic chiasm, optic tract, or lateral geniculate nuclei. Clinical manifestations may include decreased visual acuity and contrast sensitivity, impaired color vision, and an afferent pupillary defect.]
Optic Nerve Glioma	D020339	[Glial cell derived tumors arising from the optic nerve, usually presenting in childhood.]
Optic Nerve Injuries	D020221	[Injuries to the optic nerve induced by a trauma to the face or head. These may occur with closed or penetrating injuries. Relatively minor compression of the superior aspect of orbit may also result in trauma to the optic nerve. Clinical manifestations may include visual loss, PAPILLEDEMA, and an afferent pupillary defect.]
Optic Nerve Neoplasms	D019574	[Benign and malignant neoplasms that arise from the optic nerve or its sheath. OPTIC NERVE GLIOMA is the most common histologic type. Optic nerve neoplasms tend to cause unilateral visual loss and an afferent pupillary defect and may spread via neural pathways to the brain.]
Optic Neuritis	D009902	[Inflammation of the optic nerve. Commonly associated conditions include autoimmune disorders such as MULTIPLE SCLEROSIS, infections, and granulomatous diseases. Clinical features include retro-orbital pain that is aggravated by eye movement, loss of color vision, and contrast sensitivity that may progress to severe visual loss, an afferent pupillary defect (Marcus-Gunn pupil), and in some instances optic disc hyperemia and swelling. Inflammation may occur in the portion of the nerve within the globe (neuropapillitis or anterior optic neuritis) or the portion behind the globe (retrobulbar neuritis or posterior optic neuritis).]
Optic Neuropathy, Ischemic	D018917	[Ischemic injury to the OPTIC NERVE which usually affects the OPTIC DISK (optic neuropathy, anterior ischemic) and less frequently the retrobulbar portion of the nerve (optic neuropathy, posterior ischemic). The injury results from occlusion of arterial blood supply which may result from TEMPORAL ARTERITIS; ATHEROSCLEROSIS; COLLAGEN DISEASES; EMBOLISM; DIABETES MELLITUS; and other conditions. The disease primarily occurs in the sixth decade or later and presents with the sudden onset of painless and usually severe monocular visual loss. Anterior ischemic optic neuropathy also features optic disk edema with microhemorrhages. The optic disk appears normal in posterior ischemic optic neuropathy. (Glaser, Neuro-Ophthalmology, 2nd ed, p135)]
Oral Fistula	D016155	[An abnormal passage within the mouth communicating between two or more anatomical structures.]
Oral Hemorrhage	D006472	[Bleeding from the blood vessels of the mouth, which may occur as a result of injuries to the mouth, accidents in oral surgery, or diseases of the gums.]
Oral Manifestations	D009912	[Disorders of the mouth attendant upon non-oral disease or injury.]