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L1 syndrome is a group of mild to severe X-linked recessive disorders that share a common genetic basis. The spectrum of L1 syndrome disorders includes X-linked complicated corpus callosum dysgenesis, spastic paraplegia 1, MASA syndrome, and X-linked hydrocephalus with stenosis of the aqueduct of Sylvius (HSAS).
Muscular imbalance of the pelvis can develop lower crossed syndrome. It is caused by tight hip flexors and erector spinae with inhibited weak gluteals and abdominals. [11] Imbalance of the muscles can lead to an anterior pelvic tilt, increased hip flexion, and lumbar hyperlordosis of the lumbar spine.
Cross syndrome (also known as "Cross–McKusick–Breen syndrome", "hypopigmentation and microphthalmia", and "oculocerebral-hypopigmentation syndrome") is an extremely rare disorder characterized by white skin, blond hair with yellow-gray metallic sheen, small eyes with cloudy corneas, jerky nystagmus, gingival fibromatosis and severe intellectual disability and physical retardation.
[citation needed] The pattern of inheritance is sometimes called criss-cross inheritance. [1] X-linked dominant traits do not necessarily affect males more than females (unlike X-linked recessive traits). The exact pattern of inheritance varies, depending on whether the father or the mother has the trait of interest.
Medial medullary syndrome, also known as inferior alternating syndrome, hypoglossal alternating hemiplegia, lower alternating hemiplegia, [1] or Dejerine syndrome, [2] is a type of alternating hemiplegia characterized by a set of clinical features resulting from occlusion of the anterior spinal artery.
Spinal and bulbar muscular atrophy (SBMA), popularly known as Kennedy's disease, is a rare, adult-onset, X-linked recessive lower motor neuron disease caused by trinucleotide CAG repeat expansions in exon 1 of the androgen receptor (AR) gene, which results in both loss of AR function and toxic gain of function.
Lateral medullary syndrome is a neurological disorder causing a range of symptoms due to ischemia in the lateral part of the medulla oblongata in the brainstem.The ischemia is a result of a blockage most commonly in the vertebral artery or the posterior inferior cerebellar artery. [1]
Gianotti–Crosti syndrome (/ dʒ ə ˈ n ɒ t i ˈ k r ɔː s t i /), also known as infantile papular acrodermatitis, [1] papular acrodermatitis of childhood, [1] and papulovesicular acrolocated syndrome, [2]: 389 is a reaction of the skin to a viral infection. [3] Hepatitis B virus [4] and Epstein–Barr virus are the most frequently reported ...