| HP:0000006 | Autosomal dominant inheritance | "A mode of inheritance that is observed for traits related to a gene encoded on one of the autosomes (i.e., the human chromosomes 1-22) in which a trait manifests in heterozygotes. In the context of medical genetics, an autosomal dominant disorder is caused when a single copy of the mutant allele is present. Males and females are affected equally, and can both transmit the disorder with a risk of 50% for each child of inheriting the mutant allele." [HPO:curators] |
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| HP:0000514 | Slow saccades | |
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| HP:0000543 | Pale optic disks | |
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| HP:0000597 | Ophthalmoparesis | "Ophthalmoplegia is a paralysis or weakness of one or more of the muscles that control eye movement." [HPO:curators] |
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| HP:0000623 | Supranuclear ophthalmoplegia | |
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| HP:0000639 | Nystagmus | "Rhythmic, involuntary oscillations of one or both eyes related to abnormality in fixation, conjugate gaze, or vestibular mechanisms." [HPO:curators] |
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| HP:0000640 | Gaze-evoked nystagmus | "Nystagmus made apparent by looking to the right or to the left." [HPO:curators] |
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| HP:0000641 | Dysmetric saccades | |
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| HP:0000648 | Optic atrophy | |
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| HP:0001151 | Impaired horizontal smooth pursuit | "An `abnormality of ocular smooth pursuit` (HP:0000617) characterized by an impairment of the ability to track horizontally moving objects." [HPO:probinson] |
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| HP:0001252 | Muscular hypotonia | "Muscular hypotonia is an abnormally low muscle tone (the amount of tension or resistance to movement in a muscle), often involving reduced muscle strength. Hypotonia is characterized by a diminished resistance to passive stretching." [HPO:curators] |
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| HP:0001257 | Spasticity | "A motor disorder characterized by a velocity-dependent increase in tonic stretch reflexes with increased muscle tone, exaggerated (hyperexcitable) tendon reflexes." [HPO:curators] |
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| HP:0001260 | Dysarthria | "Dysarthric speech is a general description referring to a neurological speech disorder characterized by poor articulation. Depending on the involved neurological structures, dysarthria may be further classified as spastic, flaccid, ataxic, hyperkinetic and hypokinetic, or mixed." [HPO:curators] |
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| HP:0001265 | Hyporeflexia | |
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| HP:0001272 | Cerebellar atrophy | |
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| HP:0001283 | Bulbar palsy | "Bulbar weakness (or bulbar palsy) refers to bilateral impairment of function of the lower cranial nerves IX, X, XI and XII, which occurs due to lower motor neuron lesion either at nuclear or fascicular level in the medulla or from bilateral lesions of the lower cranial nerves outside the brain-stem. Bulbar weakness is often associated with difficulty in chewing, weakness of the facial muscles, dysarthria, palatal weakness and regurgitation of fluids, dysphagia, and dysphonia." [HPO:curators] |
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| HP:0001284 | Areflexia | |
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| HP:0001290 | Generalized hypotonia | "Generalized muscular hypotonia (abnormally low muscle tone)." [HPO:curators] |
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| HP:0001310 | Dysmetria | |
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| HP:0001332 | Dystonia | "An abnormally increased muscular tone that causes fixed abnormal postures. There is a slow, intermittent twisting motion that leads to exaggerated turning and posture of the extremities and trunk." [HPO:curators] |
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| HP:0001347 | Hyperreflexia | "The presence of overactive or overresponsive reflexes." [HPO:curators] |
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| HP:0001350 | Slurred speech | |
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| HP:0002015 | Dysphagia | "Difficulty in swallowing." [HPO:curators] |
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| HP:0002067 | Bradykinesia | "Bradykinesia literally means slow movement, and is used clinically to denote a slowness in the execution of movement (in contrast to hypokinesia, which is used to refer to slowness in the initiation of movement)." [HPO:curators] |
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| HP:0002070 | Limb ataxia | |
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| HP:0002071 | Extrapyramidal signs | |
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| HP:0002072 | Chorea | "Chorea (Greek for dance ) refers to widespread arrhythmic involuntary movements of a forcible, jerky and restless fashion." [HPO:curators] |
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| HP:0002073 | Progressive cerebellar ataxia | |
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| HP:0002075 | Dysdiadochokinesis | "An inability to perform rapidly alternating movements, such as rhythmically tapping the fingers on the knee, generally related to a cerebellar lesion." [HPO:curators] |
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| HP:0002078 | Truncal ataxia | |
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| HP:0002141 | Gait imbalance | |
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| HP:0002168 | Scanning speech | |
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| HP:0002174 | Postural tremor | "A type of tremors that is triggered by holding a limb in a fixed position." [HPO:curators] |
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| HP:0002198 | Enlarged fourth ventricle | |
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| HP:0002354 | Memory impairment | |
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| HP:0002380 | Fasciculations | "Fasciculations are observed as small, local, involuntary muscle contractions (twitching) visible under the skin. Fasciculations result from increased irritability of an axon (which in turn is often a manifestation of disease of a motor neuron). This leads to sporadic discharges of all the muscle fibers controlled by the axon in isolation from other motor units." [HPO:curators] |
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| HP:0002483 | Bulbar signs | |
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| HP:0002495 | Impaired vibratory sense | "A decrease in the ability to perceive vibration. Clinically, this is usually tested with a tuning fork which vibrates at 128 Hz and is applied to bony prominences such as the malleoli at the ankles or the metacarpal-phalangeal joints. There is a slow decay of vibration from the tuning fork. The degree of vibratory sense loss can be crudely estimated by counting the number of seconds that the examiner can perceive the vibration longer than the patient." [HPO:curators] |
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| HP:0002503 | Spinocerebellar tract degeneration | |
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| HP:0002542 | Olivopontocerebellar atrophy | |
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| HP:0002839 | Sphincter disturbances (bladder) | |
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| HP:0002878 | Early respiratory failure | |
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| HP:0003202 | Amyotrophy | "The presence of muscular atrophy (which is also known as amyotrophy)." [HPO:curators] |
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| HP:0003431 | Decreased motor nerve conduction velocity (NCV) | |
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| HP:0003448 | Decreased sensory nerve conduction velocities (NCV) | |
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| HP:0003487 | Babinski sign | "Upturning of the big toe (and sometimes fanning of the other toes) in response to stimulation of the sole of the foot. If the Babinski sign is present it can indicate damage to the corticospinal tract." [HPO:curators] |
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| HP:0003581 | Onset in adulthood | |
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| HP:0003693 | Distal amyotrophy | "Muscular atrophy affecting muscles in the distal portions of the extremities." [HPO:curators] |
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| HP:0003744 | Paternal anticipation bias | |
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| HP:0006801 | Hyperactive deep tendon reflexes | |
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| HP:0007001 | Loss of purkinje cells in the cerebellar vermis | |
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| HP:0007006 | Dorsal column and spinocerebellar tract degeneration | |
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| HP:0007078 | Decreased or absent sensory nerve action potentials | |
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| HP:0007263 | Spinocerebellar atrophy | |
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| HP:0007338 | Hypermetric saccades | |
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| HP:0007366 | Atrophy/Degeneration affecting the brainstem | |
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| HP:0007377 | Abnormality of somatosensory evoked potentials | "An abnormality of somatosensory evoked potentials (SSEP), i.e., of the electrical signals of sensation going from the body to the brain in response to a defined stimulus. Recording electrodes are placed over the scalp, spine, and peripheral nerves proximal to the stimulation site. Clinical studies generally use electrical stimulation of peripheral nerves to elicit potentials. SSEP testing determines whether peripheral sensory nerves are able to transmit sensory information like pain, temperature, and touch to the brain. Abnormal SSEPs can result from dysfunction at the level of the peripheral nerve, plexus, spinal root, spinal cord, brain stem, thalamocortical projections, or primary somatosensory cortex." [HPO:curators] |
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| HP:0007928 | Abnormal flash visual evoked potentials | |
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| HP:0010831 | Impaired proprioception | "A loss or impairment of the sensation of the relative position of parts of the body and joint position." [HPO:probinson] |
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| HP:0025331 | Upgaze palsy | "A limitation of the ability to direct one s gaze above the horizontal meridian." [] |
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| HP:0025401 | Staring gaze | "An abnormality in which the eyes are held permanently wide open." [PMID:22675666] |
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| HP:0030216 | Inertia | "Reduction of goal-directed behaviors linked to the impairment in frontal executive functions (planning of an action for example)." [ICM:PCaroppo] |
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| HP:0040129 | Abnormal nerve conduction velocity | |
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| HP:0100543 | Cognitive impairment | "Abnormality in the process of thought including the ability to process information." [HPO:sdoelken] |
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| HP:0410011 | Abnormality of masticatory muscle | "Any abnormality of the masticatory muscle." [orcid.org/0000-0001-5208-3432] |
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