Generalized hypotonia, and Pallor

Hot water reflex epilepsy is a rare neurologic disease characterized by the onset of generalized or focal seizures following immersion of the head in hot water, or with hot water being poured over the head. Primary generalized tonic-clonic seizures have been reported in rare cases.

HOT WATER REFLEX EPILEPSY Is also known as bathing epilepsy|water immersion epilepsy

• Intellectual disability
• Seizures
• Generalized hypotonia
• Muscular hypotonia
• Abnormality of the nervous system

SOURCES: OMIM ORPHANET MENDELIAN

Benign familial infantile seizure is an autosomal dominant disorder characterized by afebrile partial complex or generalized tonic-clonic seizures occurring between 3 and 12 months of age with a good response to medication and no neurologic sequelae. Seizures usually remit by age 18 months (summary by Weber et al., 2004).For a general phenotypic description and a discussion of genetic heterogeneity of benign familial infantile seizures, see BFIS1 (OMIM ).Benign familial infantile seizures can also occur in 2 allelic disorders: infantile convulsions and choreoathetosis (ICCA ) and paroxysmal kinesigenic choreoathetosis (EKD1 ).

SEIZURES, BENIGN FAMILIAL INFANTILE, 2; BFIS2 Is also known as bfic2|convulsions, benign familial infantile, 2

• Seizures
• Generalized hypotonia
• Pallor
• Generalized tonic-clonic seizures
• Dyskinesia

SOURCES: MESH OMIM MENDELIAN

Hypomyelination with brain stem and spinal cord involvement and leg spasticity is a rare, genetic, leukodystrophy disorder characterized by diffuse hypomyelination in the supratentorial brain white matter, brain stem and spinal cord. Patients usually present nystagmus, lower limb spasticity, hypotonia, and motor developmental delay, as well as MRI signal abnormalities involving the corpus callosum, anterior brainstem, pyramidal tracts, superior and inferior cerebellar peduncles, dorsal columns and/or lateral corticospinal tracts.

HYPOMYELINATION WITH BRAIN STEM AND SPINAL CORD INVOLVEMENT AND LEG SPASTICITY Is also known as hbsl|aspartyl-trna synthetase deficiency

• Intellectual disability
• Generalized hypotonia
• Nystagmus
• Spasticity
• Motor delay

SOURCES: OMIM ORPHANET MENDELIAN

Primary CD59 deficiency is a rare, genetic, hematologic and neurologic disease characterized by chronic, Coombs-negative hemolysis associated with early-onset, relapsing, immune-mediated, inflammatory, axonal or demyelinating, sensory-motor, peripheral polyneuropathy and isolated or recurrent cerebrovascular events (in anterior or posterior circulation).

PRIMARY CD59 DEFICIENCY Is also known as cd59 deficiency

• Generalized hypotonia
• Muscle weakness
• Anemia
• Skeletal muscle atrophy
• Respiratory insufficiency

SOURCES: MESH ORPHANET OMIM MENDELIAN

Early infantile epileptic encephalopathy-48 is a severe autosomal recessive neurologic disorder characterized by global developmental delay with intellectual disability and absent speech, poor, if any, motor development, and onset of seizures in the first year of life. Affected individuals have poor eye contact and may develop microcephaly and abnormal movements (summary by Assoum et al., 2016).For a general phenotypic description and a discussion of genetic heterogeneity of EIEE, see EIEE1 (OMIM ).

• Intellectual disability
• Seizures
• Global developmental delay
• Generalized hypotonia
• Microcephaly

SOURCES: OMIM MENDELIAN

Neonatal intractable myoclonus is a severe neurologic disorder characterized by the onset of intractable myoclonic seizures soon after birth. Affected infants have intermittent apnea, abnormal eye movements, pallor of the optic nerve, and lack of developmental progress. Brain imaging shows a progressive leukoencephalopathy. Some patients may die in infancy. There is phenotypic and biochemical evidence of mitochondrial dysfunction (summary by Duis et al., 2016).

• Seizures
• Generalized hypotonia
• Hearing impairment
• Microcephaly
• Nystagmus

SOURCES: OMIM MENDELIAN

Familial acute necrotizing encephalopathy or ADANE is a potentially fatal neurological disease characterised by neuropathological lesions principally involving the brainstem, thalamus and putamen.

FAMILIAL ACUTE NECROTIZING ENCEPHALOPATHY Is also known as adane|recurrent acute necrotizing encephalopathy|ane|encephalopathy, acute necrotizing, susceptibility to

• Intellectual disability
• Seizures
• Generalized hypotonia
• Ataxia
• Spasticity

SOURCES: OMIM ORPHANET MENDELIAN

• Intellectual disability
• Generalized hypotonia
• Microcephaly
• Nystagmus
• Strabismus

SOURCES: OMIM MENDELIAN

Dihydrofolate reductase deficiency is an autosomal recessive metabolic disorder characterized by the hematologic findings of megaloblastic anemia and variable neurologic symptoms, ranging from severe developmental delay and generalized seizures in infancy (Banka et al., 2011) to childhood absence epilepsy with learning difficulties to lack of symptoms (Cario et al., 2011). Treatment with folinic acid can ameliorate some of the symptoms.

CONSTITUTIONAL MEGALOBLASTIC ANEMIA WITH SEVERE NEUROLOGIC DISEASE Is also known as dihydrofolate reductase deficiency|dhfr deficiency

• Seizures
• Global developmental delay
• Generalized hypotonia
• Microcephaly
• Ataxia

SOURCES: ORPHANET OMIM MESH MENDELIAN

Overhydrated hereditary stomatocytosis (OHSt) is a disorder of red cell membrane permeability to monovalent cations and is characterized clinically by hemolytic anemia.

OVERHYDRATED HEREDITARY STOMATOCYTOSIS Is also known as ohs|potassium-sodium disorder of erythrocyte

• Generalized hypotonia
• Pain
• Anemia
• Hepatomegaly
• Fever

SOURCES: OMIM ORPHANET MESH MENDELIAN