| 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:0000718 | Aggressive behavior | "Aggressive behavior can denote verbal aggression, physical aggression against objects, physical aggression against people, and may also include aggression towards oneself." [HPO:curators] |
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| HP:0000729 | Pervasive developmental disorder | |
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| HP:0000752 | Hyperactivity | |
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| HP:0000992 | Photosensitivity | "An increased sensitivity of the skin to light. Photosensitivity may result in a rash upon exposure to the sun (which is known as photodermatosis). Photosensitivity can be diagnosed by phototests in which light is shone on small areas of skin." [HPO:curators] |
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| HP:0001249 | Mental retardation | |
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| HP:0001251 | Ataxia | "Ataxia is a nonspecific neurological sign and symptom consisting of gross lack of coordination of muscle movements. Ataxia is caused by dysfunction of one or more parts of the nervous system including the cerebellum, the sensory nervous system, the vestibular system, or the cerebral cortex." [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:0001263 | Developmental retardation | "A delay in the achievement of motor or mental milestones manifested prior to age 18 and generally associated with lifelong mental and/or physical impairments." [HPO:curators] |
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| HP:0001268 | Mental deterioration | |
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| HP:0001298 | Encephalopathy | |
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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:0002069 | Generalized tonic-clonic seizures | "Generalized tonic-clonic seizures are `generalized seizures` (HP:0002197) in which the patient suddenly loses conciousness, the eyes roll back, and the entire body musculature undergoes tonic contractions. In the clonic phase of the seizure, there are rhythmic contractions of the musculature alternating with relaxation of all muscle groups. Loss of sphincter control during the seizure is common. This form of seizure was formerly commonly called grand mal seizure." [HPO:curators] |
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| HP:0002121 | Absence seizures | "Recurrent absence seizures are `generalized seizures` (HP:0002197) that are characterized by a sudden cessation of motor activity and by a blank facial expression with flickering of the eyelids. There is no convulsive muscular activity or loss of postural control." [HPO:probinson] |
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| HP:0002123 | Myoclonic seizures | "Myoclonic seizures are sudden, brief losses of consciousness and postural tone not associated with tonic muscular contractions. Myoclonic seizures may involve one body part or the entire body. In the latter case, the myoclonic seizure is accompanied by a violent fall but not by loss of consciousness." [HPO:curators] |
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| HP:0002133 | Status epilepticus | |
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| HP:0002353 | EEG abnormalities | "Abnormality observed by electroencephalogram (EEG), which is used to record of the brain s spontaneous electrical activity from multiple electrodes placed on the scalp." [HPO:curators] |
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| HP:0002363 | Abnormality of the brainstem | |
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| HP:0002373 | Febrile seizures | "Febrile seizures are convulsions induced by a fever in infants or small children and are generally characterized by loss of consciousness and tonic-clonic movements. Most febrile seizures last a minute or two." [HPO:curators] |
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| HP:0002376 | Developmental regression | |
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| HP:0002527 | Falls | |
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| HP:0007207 | Seizures, tonic-clonic, photosensitive | |
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| HP:0007270 | Atypical absence seizures | |
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| HP:0007359 | Partial seizures | "Recurrent partial `seizures` (HP:0001250). In a partial seizure, the electrical disturbance is limited to one part or side of the brain. That is, partial epilepsies are epileptic disorders in which clinical or laboratory findings disclose a localized origin of seizures." [HPO:curators] |
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| HP:0010818 | Tonic seizures | "A type of `seizure` (HP:0001250) characterized by a sudden increase in muscle tone whereby the body, arms, or legs make sudden stiffening movements and consciousness is usually preserved. Tonic seizures can occur during sleep. Tonic seizures usually affect both sides of the body, and cause a fall if the affected person was standing when the seizure started." [HPO:probinson] |
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| HP:0010819 | Atonic seizures | "A type of `seizure` (HP:0001250) characterized by a suddenloss of musle tone. Usually, consciousness is retained. In an atonic seizure, the eyelids may droop, the head may nod, and the person may drop things and fall to the ground." [HPO:probinson] |
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| HP:0010849 | EEG: spike-wave complexes (>3.5 Hz) | "The presence of complexes of spikes and waves (>3.5 Hz) in electroencephalography (EEG)." [HPO:probinson] |
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| HP:0011170 | Myoclonic atonic seizures | "Seizures with sudden loss or diminution of muscle tone with a preceding myoclonic or tonic event lasting one to two seconds or more, involving head, trunk, jaw or limb musculature." [HPO:jalbers] |
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| HP:0011195 | EEG with focal sharp slow waves | "EEG with focal sharp transient waves of a duration between 80 and 200 msec followed by a slow wave." [HPO:jalbers] |
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| HP:0011203 | EEG with abnormally slow frequencies | "EEG with abnormally slow frequencies." [HPO:jalbers] |
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| HP:0012075 | Personality disorder | "An abnormality of mental functioning affecting the personality and behavioural tendencies of an individual and characterized by a rigid and unhealthy pattern of thinking and behavior. The definition of a personal disorder implies that the abnormality is not the result of damage or insult to the brain or from another psychiatric disorder." [HPO:probinson] |
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| HP:0012658 | Abnormal brain FDG positron emission tomography | "An anomaly detectable in [18F]-fluorodeoxyglucose (FDG) positron emission tomography (PET) brain scans. Glucose uptake measured with FDG-PET is a marker of neuronal metabolic activity." [HPO:probinson] |
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| HP:0100710 | Impulsivity | |
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| HP:0200134 | Epileptic encephalopathy | |
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