In pediatric medicine, acrocephalosyndactyly is the common presentation of craniosynostosis and syndactyly. When there is also polydactyly the classification is acrocephalopolysyndactyly. Cause
Diagnosis
Classification
It has several different types:

type I – Apert syndrome: 577 
type II – Crouzon syndrome: 577 
type III – Saethre–Chotzen syndrome
type IV – Goodman Syndrome
type V – Pfeiffer syndromeA related term, acrocephalopolysyndactyly, refers to the inclusion of polydactyly to the presentation. It also has multiple types:

type I – Noack syndrome; now classified with Pfeiffer syndrome
type II – Carpenter syndrome
type III – Sakati–Nyhan–Tisdale syndrome
type IV – Goodman syndrome; now classified with Carpenter syndrome
type V – Pfeiffer syndromeIt has been suggested that the distinction between "acrocephalosyndactyly" versus "acrocephalopolysyndactyly" should be abandoned. Treatment
See also
List of skin conditions
Oxycephaly

References
External links

Acrocephalosyndactylia at the US National Library of Medicine Medical Subject Headings (MeSH)
Irlen syndrome, occasionally referred to as scotopic sensitivity syndrome (SSS) or Meares–Irlen syndrome, is a postulated disorder of vision or image-processing in the brain. Irlen syndrome is also sometimes referred to as asfedia or visual stress. Many mainstream professionals are skeptical of the concept. Research on Irlen syndrome has produced mixed results, finding a possible neurological basis for the condition but little or no evidence supporting the most commonly proposed treatment using tinted eyeglasses or overlays to aid reading. History
In 1980, New Zealand teacher Olive Meares described the visual distortions some individuals reported when reading from white paper. In 1983, American psychologist Helen Irlen wrote a paper about the use of coloured overlays aiding the reading abilities of some people. Similar symptoms were separately described by Meares and Irlen, each unaware of the others work. Irlen, who was the first to systematically define the condition, named her findings "scotopic sensitivity", though in the discussions and debates over the following years, some referred to it as Meares-Irlen syndrome. The Irlen Institute, founded by Helen Irlen, describes scotopic sensitivity as "a perceptual processing disorder" related to brain interpretations of colours and light.It remains controversial whether non-Irlen-certified Meares-Irlen syndrome and the original Irlen syndrome are the same condition. Irlen syndrome, for example, seems to include a broader array of symptoms, including severe variants of the core condition.