Lesser Known Disorders

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NASET is proud to provide a series devoted to lesser known disorders that you may encounter in special education. While not as prevalent as other disorders experienced by most special education teachers, you should be aware of these disorders in order to become more knowledgeable, and increase your ability to assist patents of children with these disorders if they should appear in your classroom or school. Each month we will present a list of 3 disorders that appear in the special education population. Some of these  disorders may contain subtypes which will also be presented. You will also notice that each disorder has a code. These codes represent the coding system for all disabilities and disorders listed in the Educator's Diagnostic Manual (EDM) Wiley Publications.

Latest Issue 

Issue # 60

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Disorders in this issue:

Rare Disorders

Roughly 7,000 rare diseases/disorders have been identified as affecting the human race. Because they are rare, it can be a real challenge for a person to be accurately diagnosed. Finding effective treatments, especially medicine, can also be a challenge—and for the same reason. Rareness. This issue of NASET’s Lesser Known Disorders in Special Education series will provide a core of resources regarding rare disorders including: Organizations addressing rare disorders; Genetics and genetic disorders; The Human Genome project; Laws you may not have heard of; Orphan drugs; and the undiagnosed condition.


Archived Issues 

Issue #1

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Disorders in this issue:

  • Rett Syndrome
  • Intellectual Disability due to Prader-Willi Syndrome
  • Apraxia of Speech (Verbal Apraxia or Dyspraxia)

Issue #2

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Disorders in this issue:

  • Gerstmann's Syndromes
  • Apraxia of Speech
  • Cornelia de Lange Syndrome

Issue #3

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Disorders in this issue:

  • Aicardi Syndrome (Aicardi-Goutieres syndrome)
  • Developmental Disorders affecting brain formation
  • Sensory Integration Disorders

Issue #4

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Disorders in this issue:

  • Tactile defensive type
  • Prader-Willi syndrome
  • Hyperlexia

Issue #5

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Disorders in this issue:

  • Developmental Anarithmetria dyscalculia
  • Savant Syndrome Definition
  • Addition Articulation Disorder

Issue #6

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Disorders in this issue:

  • Dysgraphia
  • Turner Syndrome
  • Landau-Kleffner Syndrome

Issue #7

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Disorders in this issue:

  • Osteogenesis imperfecta (OI)-Brittle Bone Disease
  • Multiplex Developmental Disorder
  • Addison's Disease

Issue #8

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Disorders in this issue:

  • Muscle Tension Dysphonia
  • Intellectual Disability due to Fragile-X Syndrome
  • Nonverbal Learning Disabilities (Nonverbal Learning Disorders or NLD)

Issue #9

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Disorders in this issue:

  • Tactile Defensiveness Sensory Integration Disorder (Immature Tactile Type)
  • Proprioceptive Perceptual Sensory Integration Disorder
  • Auditory Agnosia

Issue #10

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Disorders in this issue:

  • Aniridia
  • Acromegaly
  • Cholesteatoma


Issue #11

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Disorders in this issue:

  • Organizational Learning Disorders
  • Syndromic Hearing Losses
  • Cushing Syndrome

Issue #12

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Disorders in this issue:

  • Attention-to-Sequence Dyscalculia
  • Aplasia
  • Relationship Problems Disorder

Issue #13

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Disorders in this issue:

  • Multiplex Developmental Disorder
  • Idiopathic Juvenile Osteoporosis
  • Blepharospasm

Issue #14

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Disorders in this issue:

  • LD 4.04-Dyseidetic Dyslexia
  • OHI 21.01 Cleft Lip
  • OI 4.03 Contracture Deformity

Issue # 15

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Disorders in this issue:

  • LD 2.02-Attention-to-Sequence Dyscalculia

  • SL 6.00-Aphasia

  • OI 11.06-Juvenile spinal muscular atrophy (Kugelberg-Welander disease)


Issue # 16

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Disorders in this issue:

  • LD 2.04 - Developmental Anarithmetria (Incorrect Operation Dyscalculia)
  • AL 6.02 - Broca's Aphasia (Motor Aphasia)
  • VI  3.11 - Nystagmus


Issue # 17

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Disorders in this issue:

  • SL 5.00 - Voice Disorders (Dysphonia)

  • OI 1.00 - Bone Diseases


Issue # 18

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Disorders in this issue:

  • VI 2.00 - Corneal Dystrophies of the Eye
  • LD 10.00-Sensory Integration Disorders


Issue # 19

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Disorders in this issue:

  • VI 8.02 - Hemianopsia (Hemianopia)
  • HI 6.00 - Syndromic Hearing Losses
  • LD 12.10 - Visual Pursuit and Tracking Disorder


Issue # 20

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Disorders in this issue:

  • OI 9.00 Spina Bifida
  • HI 1.02-Pure word deafness
  • LD 10.01-Tactile Defensiveness Sensory Integration Disorder (Immature Tactile Type)


Issue # 21

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Disorders in this issue:

  • OHI 5.00 Alpers Disease
  • LD 10.04 Vestibular Dysfunction Sensory Integration Disorder
  • OI 8.03 Juvenile Idiopathic Scoliosis


Issue # 22

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Disorders in this issue:

  • LD 8.03-Visual-Spatial-Organizational Nonverbal Learning Disability
  • ID 2.02-Intellectual Disability due to Colpocephaly
  • OI 3.03 Congenital hydrocephalus

Issue # 23

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Disorders in this issue:

  • LD 9.03-Directionality Organizational Disorder
  • HI 1.02-Pure word deafness
  • VI 1.07 Stevens-Johnson Syndrome

Issue # 24

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Disorders in this issue:

  • LD 9.05-Temporal Disorganization Disorder
  • OI 1.01 Fibrous Dysplasia
  • ID 3.03-Intellectual Disability due to Phenylketonuria (PKU)

Issue # 25

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Disorders in this issue:

  • LD 4.03-Dysnomia
  • SL 2.01- Distortion Articulation Disorder
  • HI 1.01-Auditory Agnosia


Issue # 26

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Disorders in this issue:

  • LD 2.04-Developmental Anarithmetria (Incorrect Operation Dyscalculia)
  • SL 5.00-Voice Disorders (Dysphonia)
  • VI 2.01-Bietti's Crystalline Dystrophy


Issue # 27

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Disorders in this issue:

    • LD 8.01-Motoric Nonverbal Learning Disability
    • HI 1.02-Pure word deafness
    • OHI 5.00-Alpers Disease


      Issue # 28

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      Disorders in this issue:

          • LD 8.02-Social Nonverbal Learning Disability
          • HI 1.01-Auditory Agnosia
          • SL 10.01-Receptive Morphological Language Disorder


          Issue # 29

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          Disorders in this issue:

                • VI 1.06 Pterygium
                • HI 2.03-Otosclerosis
                • VI 1.07 Stevens-Johnson Syndrome


                Issue # 30

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                Disorders in this issue:

                      • LD 1.05-Auditory Figure Ground Processing Disorder
                      • OHI 1.00-Aicardi Syndrome (Aicardi-Goutieres syndrome)
                      • OI 1.01 Fibrous Dysplasia


                      Issue # 31

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                      Disorders in this issue:

                            • LD 12.10-Visual Pursuit and Tracking Disorder
                            • OHI 14.01 Acromegaly
                            • HI 1.02-Pure word deafness


                            Issue # 32

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                            Disorders in this issue:

                            • LD 10.03-Tactile Pressure Sensory Integration Disorder
                            • OI 1.01 Fibrous Dysplasia
                            • VI 2.01-Bietti's Crystalline Dystrophy

                              Issue # 33

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                              Disorders in this issue:

                                      • LD 9.01-Catastrophic Response Organizational Disorder
                                      • LD 9.02-Cognitive Disorganization Disorder (Internal Disorder)
                                      • HI 7.00- Vestibular Schwannoma (Acoustic Neuroma)


                                      Issue # 34

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                                      Disorders in this issue:

                                      • LD 4.05- Dysnemkinesia Dyslexia
                                      • SL 2.01- Distortion Articulation Disorder
                                      • OI 6.01- Becker Muscular Dystrophy


                                      Issue # 35

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                                      Disorders in this issue:

                                      • VI 3.03- Aniridia
                                      • HI 2.01- Cholestreatoma
                                      • LD 12.10- Visual Pursuit and Tracking Disorder


                                      Issue # 36

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                                      Disorders in this issue:

                                      • LD 12.02- Visual Closure Processing Disorder
                                      • VI 6.03- Blepharitis (Granulated eyelids)
                                      • OI 1.07- Idiopathic Juvenile Osteoporosis


                                      Issue # 37

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                                      Disorders in this issue:

                                        • LD 12.02-Visual Closure Processing Disorder
                                        • SL 6.06-Transcortical Aphasia
                                        • OI 4.03 Contracture Deformity


                                          Issue # 38

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                                          Disorders in this issue:

                                            • LD 9.02- Cognitive Disorganization Disorder (Internal Disorder)
                                            • LD 9.03- Directionality Organizational Disorder
                                            • LD 9.04- External Disorganization Disorder

                                            Issue # 39

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                                            Disorders in this issue:

                                              • SL 6.05-Landau-Kleffner Syndrome
                                              • SL 6.06-Transcortical Aphasia
                                              • SL 6.07-Wernicke's Aphasia

                                              Issue # 40

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                                              Disorders in this issue:

                                                • OHI 6.00-Angelman Syndrome
                                                • OHI 10.03-von Willebrand Disease
                                                • OHI 11.05a-Burkitt's Lymphoma


                                                Issue # 41

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                                                Disorders in this issue:

                                                  • LD 1.02-Auditory Blending Processing Disorder
                                                  • LD 1.03-Auditory Closure Processing Disorder
                                                  • LD 1.04-Auditory Discrimination Processing Disorder


                                                  Issue # 42

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                                                  Disorders in this issue:

                                                    • VI 3.13-Optic Nerve Hypoplasia
                                                    • VI 3.14-Retinitis Pigmentosa (RP)
                                                    • VI 3.15-Retinoblastoma


                                                    Issue # 43

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                                                    Disorders in this issue:

                                                      • HI 4.00 Neurodegenerative Disorders
                                                      • VI 1.06 Pterygium
                                                      • LD 2.04-Developmental Anarithmetria (Incorrect Operation Dyscalculia)


                                                      Issue # 44

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                                                      Disorders in this issue:

                                                        • HI 4.02-Auditory Neuropathy (also known as Auditory Dyssynchrony)
                                                        • VI 3.04-Anophthalmia
                                                        • VI 3.05-Microphthalmia


                                                        Issue # 45

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                                                        Disorders in this issue:

                                                          • SL 3.01-Consonant Sequence Reduction Disorder (Cluster Reduction)
                                                          • OI 1.08 Renal Osteodystrophy
                                                          • LD 2.06-Language Dyscalculia


                                                          Issue # 46

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                                                          Disorders in this issue:

                                                          • HI 7.00- Vestibular Schwannoma (Acoustic Neuroma)
                                                          • HI 7.01 Bilateral Vestibular Schwannomas
                                                          • OI 3.04 Hydrocephalus ex-vacuo
                                                          • OI 3.05 Non-communicating hydrocephalus


                                                          Issue # 47

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                                                          Disorders in this issue:

                                                          • HI 2.01-Cholesteatoma
                                                          • HI 6.00 Syndromic Hearing Losses


                                                          Issue # 48

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                                                          Disorders in this issue:

                                                          • VI 3.12-Optic Nerve Atrophy (Second cranial nerve atrophy)
                                                          • VI 3.13-Optic Nerve Hypoplasia
                                                          • VI 3.14- Retinitis Pigmentosa (RP)
                                                          • VI 3.16-Retinopathy of Prematurity (ROP) – (Retrolental fibroplasias)


                                                          Issue # 49

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                                                          Disorders in this issue:

                                                          • LD 10.03-Tactile Pressure Sensory Integration Disorder
                                                          • LD 10.04- Vestibular Dysfunction Sensory Integration Disorder
                                                          • LD 11.00 Social Cue Disorder


                                                          Issue # 50

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                                                          Disorders in this issue:

                                                          • SL 10.02-Receptive Phonological Language Disorder
                                                          • SL 10.03-Receptive Pragmatic Language Disorder
                                                          • SL 10.04-Receptive Syntax Language Disorder
                                                          • SL 10.05-Receptive Semantics Language Disorder


                                                          Issue # 51

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                                                          Disorders in this issue:

                                                          • LD 1.01-Auditory Association Processing Disorder
                                                          • LD 1.06-Auditory Language Classification Processing Disorder
                                                          • LD 1.07-Auditory Long Term-Memory Processing Disorder


                                                          Issue # 52

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                                                          Disorders in this issue:

                                                          • OHI 17.11 Epilepsy with Tonic seizures
                                                          • OHI 17.01 Epilepsy with Absence seizures
                                                          • OHI 9.03 Inflammatory Bowel Diseases


                                                          Issue # 53

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                                                          Disorders in this issue:

                                                          • ID 4.02-Intellectual Disability due to Maternal Rubella
                                                          • ID 4.03-Intellectual Disability due to Rh Disease (Rhesus hemolytic disease)
                                                          • ID 4.04-Intellectual Disability due to Maternal Syphilis
                                                          • ID 4.05-Intellectual Disability due to Maternal Toxoplasmosis


                                                          Issue # 54

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                                                          Disorders in this issue:

                                                          • LD 2.05-Estimation Dyscalculia
                                                          • LD 2.03-Basic Number Fact Dyscalculia
                                                          • LD 2.07-Measurement Dyscalculia


                                                          Issue # 55

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                                                          Disorders in this issue:

                                                          • HI 2.03-Otosclerosis
                                                          • HI 3.00-Mixed hearing loss
                                                          • HI 4.00 Neurodegenerative Disorder


                                                          Issue # 57

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                                                          Disorders in this issue:

                                                          • LD 1.06-Auditory Language Classification Processing Disorder
                                                          • LD 1.07-Auditory Long Term-Memory Processing Disorder
                                                          • LD 1.08-Auditory-to-Written Expression Processing Disorder


                                                          Issue # 58

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                                                          Disorders in this issue:

                                                          • VI 3.16-Retinopathy of Prematurity (ROP)
                                                          • VI 3.17-Strabismus
                                                          • VI 3.18 Vision Loss due to Disease or Infection


                                                          Issue # 59

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                                                          Disorders in this issue:

                                                          • LD 2.12-Temporal Dyscalculia
                                                          • LD 3.01 Dyslexic Dysgraphia
                                                          • LD 3.02 Motor Dysgraphia

                                                                                 

                                                                                 

                                                                                 

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