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26 Possible Causes for Mental Retardation by Age 30 Years

  • Mental Disorder

    . & Rantakallio , P. ( 1986 ) Mortality of mentally retarded children to 17 years of age assessed in a prospective one-year birth cohort .[] Journal of Mental Deficiency Research , 30 , 401 – 405 . Sims , A. C. P. ( 1973 ) Importance of a high tracing-rate in long-term medical follow-up studies .[]

  • Wolfram Syndrome

    Respiratory failure secondary to brain stem atrophy may have fatal consequences by the age of 30 years.[] Patients usually die at the median age of 30 (range 25–49 years) as a result of brainstem atrophy or renal failure secondary to infections [1, 3].[] A variety of mental disturbances including mental retardation, dementia, depression, and behavioral disorders have been reported.[]

  • Mental Retardation

    Finally, onset must occur before age 18 years.[] The DSM-IV classifies mental retardation into four stages based on severity: mild (IQ score of 50-55 to approximately 70), moderate (IQ score of 30-35 to 50-55), severe (IQ[]

  • Scrotal Elephantiasis

    Up to the age of 30 the patient was mobile by the use of a wheelchair, however the increasing size of his scrotum had made him bed-ridden for the past 10 years.[] retardation.[] The patient had a history of spina bifida with paralysis of the lower extremities, neurogenic bladder dysfunction, insulin dependent diabetes mellitus type 2 and slight mental[]

  • Progressive Epilepsy-Intellectual Disability Syndrome, Type Finnish

    94 Paroxysmal Dyskinesias E-1637 95 Movement Disorders of Infancy E-1646 96 DrugInduced Movement Disorders in Children E-1651 97 Cerebral Palsy E-1660 98 Tics and Tourette Syndrome E-1673 99 Genetic and Metabolic Disorders of the White Matter E-1690 100 Acquired Disorders Affecting the White Matter E-1725 101[…][]

  • Rothmund Thomson Syndrome

    Nearly 10-40% patients will develop bilateral juvenile cataract by 4-7 years of age and about 30% will have hypogonadism. [1] Nails may be dystrophic and hair (scalp, beard[] (short stature, slender and delicate limbs, small hands, bird like skull), mental development remains normal.[] […] homozygous or compound heterozygous (frameshift/missense) mutations in RECQL4 DNA helicase gene mapped to chromosome 8q24.3. [3], [4] Although physical development is frequently retarded[]

  • Limb-Girdle Muscular Dystrophy

    retardation: Average IQ 77 Cardiac: No involvement Progression Slow: Earlier onset more rapid Loss of walking 10 to 30 years after onset 50% in 3rd decade Most by age 40[] Elbow, Wrist & Finger flexion Common late in disease progression: Rigid spine May be severe & require surgery Differential diagnosis: Emery-Dreifuss CNS Normal, or Mild mental[]

  • Dyskeratosis Congenita

    Physical and mental development may be retarded. In the majority of cases testicular atrophy. Death from carcinoma between 30 and 50 years of age.[]

  • Dubowitz Syndrome

    Mild mental retardation was present. At age 30 years she is living independently in her own apartment and working full-time in a nearby sheltered workshop.[] Mild mental retardation was present.[] At age 30 years she is living independently in her own apartment and working full-time in a nearby sheltered workshop. 1995 Wiley-Liss, Inc.[]

  • Launois Syndrome

    At approximately 18 to 20 years of age abnormal growth starts and continues until 27 to 30 years of age. Possible, mental retardation, cephalgia, and visual defects.[] Onset in adolescence, usually prior to puberty and closing of the epiphyses of long bones, which show retarded skeletal growth.[]

Further symptoms