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Denver developmental screening test tests...
gross motor skills, fine motor skills, language, and personal-social interaction
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Cerebral palsy
due to pre or perinatal damage to cerebromotor pathways
-hemiparetic - weakness and spasticity are seen on one side of the body (fisting on the affected side, early hand preference, increased reflexes)
-diparetic - spasticity of all 4 limbs, kids usually normal intelligence, less likely to have seizures vs other forms of CP
-spastic quadriplegic - all four limbs affected, seizures within first 48 hours of life, maybe cerebral hypotonia
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Levels of mental retardation
- Mild - IQ 55-70
- Moderate - 40-55
- Severe - 25-40
- Profound - less than 25
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Moro reflex
elicited by head extension: extension and abduction of arms and legs. asymmetry indicates CNS disease
present from birth - 3 months
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Tonic neck reflex
Turning head: arm and leg extended on the side of the turn with flexion on the other side. If infant is uable to move out of posture, implies possible brain pathology
present from 1-5 months
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Traction response
Lift baby by tration in both hands. Head lag after 6 months is pathologic and indicates hypotonia
present birth - 6 months
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Parachute reflex
Elicited by plunging suspended infant downward. Arms should thrust forward symmetrically as if breaking the fall. Also elicited with baby in sitting position pushed forward.
present 6 months to end of life
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Tay-Sachs Disease
Metabolic defect - hexosaminidase A
chromisome - 15
notes - cherry red spot
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Niemann-Pick disease
Metabolic defect - sphingomyelinase
chromisome - 11
notes - chery red spot
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Gaucher Disease
- Metabolic defect -glucocerebrosidase
- chromisome - 1
- notes - cherry red spot, gaucher cells in bone marrow
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Krabbe disease
- Metabolic defect - galactosylceraminde beta-galactosidase
- chromisome - 14
- notes - globoid cells with periodic-acid Schiff positive granules
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Hurler syndrome
- Metabolic defect - alpha-L-iduronidase
- chromisome - 4
- notes - clouding of cornea, characteristic facies and dwarfism
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Hunter syndrome
- Metabolic defect - iduronate sufatase
- chromisome - x-linked
- notes - hurler phenotype without corneal clouding
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Metachormatic leukodystrophy
- Metabolic defect - arylsulfatase A
- chromisome - 22
- notes - cherry red spot, demyelinating, can present as schizophrenia in adults, positive urine sulfatides
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Adrenoleukodystrophy
- Metabolic defect - very long chain fatty acid oxidation
- chromisome - x-linked
- notes - white matter hyperintensity of MRI, may present as neuropathy or myelopathy in adults
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Alexander disease
- Metabolic defect - glial fibrillary acidic protein
- chromisome - 11 or 17
- notes - rosenthal fibers on biopsy, macrocephaly, dysmyelination of CNS
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Canavan disease
- Metabolic defect - aspartoacylase
- chromisome - 17
- notes - macrocephaly, dysmyelination of the CNS
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Pelizaeus-Merzbacher disease
- Metabolic defect - proteolipid protein
- chromisome - x-linked
- notes - pendular nystagmus, dysmyelination of CNS
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Leigh disease
- Metabolic defect - mitochondrial
- chromisome - AR or x-linked
- notes - bilateral putaminal hyperintensity of MRI
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Rett syndrome
- Metabolic defect - methyl-CpG-binding protein-2
- chromisome - x-linked
- notes - occurs only in girls: microcephaly, autism, hand-wringing
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Neuronal ceroid lipofuscinosis
- Metabolic defect - excess lipofuscin storage
- chromisome - many
- notes - dementia, myoclonus, ataxia, retinitis pigmentosa
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NF1
AD, chromosome 17
optic nerve gliomas, cafe-au-lait spots, neurofibromas, axillary or inguinal freckles, lisch nodules in iris
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NF2
AD, 22
bilateral acoustic neuromas, cafe-au-lait spots less common than NF1
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Tuberous sclerosis
AD
cortical tubers, subependymal nodules and astrocytomas, mental retardation, seizures, adenoma sebaceum, ash-leaf spots, shagreen patches, angiomyolipomas of kidneys, cardiac rhabdomyoma
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ataxia telangiectasia
AR, 11
truncal ataxia, progressive dementia, telangiectasias, immunodeficiency
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von hippel-lindau
AD, 3
cerebellar hemangioblastomas, ataxia, renal lesions (carcinomas, pheochromocytoma, etc)
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sturge weber
sporadic inheritance
venous angioma of pia mater, seizures, hemiparesis, mental retardation, port-wine stain
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