| HP:0000007 | Autosomal recessive 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 homozygotes. In the context of medical genetics, autosomal recessive disorders manifest in homozygotes (with two copies of the mutant allele) or compound heterozygotes (whereby each copy of a gene has a distinct mutant allele)." [HPO:curators] |
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| HP:0000338 | Hypomimic face | |
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| HP:0000571 | Hypometric saccades | |
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| HP:0000738 | Hallucinations | |
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| HP:0001249 | Mental retardation | |
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| HP:0001250 | Seizures | "Seizures are an intermittent `abnormality of the central nervous system` (FMA:HP:0002011) due to a sudden, excessive, disorderly discharge of cerebral neurons and characterized clinically by some combination of disturbance of sensation, loss of consciousness, impairment of psychic function, or convulsive movements." [HPO:probinson] |
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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:0001300 | Parkinsonism | |
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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:0001336 | Myoclonus | "Very brief, involuntary random muscular contractions occurring at rest, in response to sensory stimuli, or accompanying voluntary movements." [HPO:curators] |
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| HP:0001337 | Tremor | "An unintentional, oscillating to-and-fro muscle movement." [HPO:curators] |
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| HP:0001621 | Soft voice | |
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| HP:0001761 | Pes cavus | |
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| HP:0002063 | Rigidity | |
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| HP:0002066 | Gait ataxia | "Impairment of the ability to coordinate the movements required for normal walking." [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:0002172 | Postural instability | |
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| HP:0002304 | Akinesia | |
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| HP:0002322 | Resting tremor | "A resting tremor occurs when muscles are at rest and becomes less noticeable or disappears when the affected muscles are moved. Resting tremors are often slow and coarse." [HPO:curators] |
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| HP:0002362 | Shuffling gait | |
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| HP:0002425 | Anarthria | "A defect in the motor ability that enables speech." [HPO:curators] |
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| HP:0002540 | Inability to walk | |
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| HP:0002650 | Scoliosis | "The presence of an abnormal lateral curvature of the spine." [HPO:curators] |
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| HP:0003677 | Slow progression | |
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| HP:0003678 | Rapidly progressive | |
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| HP:0007164 | Slowed slurred speech | |
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| HP:0007256 | Mild pyramidal signs | |
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| HP:0007311 | Short stepped shuffling gait | |
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| HP:0008969 | Leg muscle stiffness | |
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| HP:0012378 | Fatigue | "A subjective feeling of tiredness characterized by a lack of energy and motivation." [HPO:probinson] |
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| HP:0012444 | Brain atrophy | "Partial or complete wasting (loss) of brain tissue that was once present." [HPO:probinson] |
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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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