
1) Genetic disorder
Found on
https://www.crosswordclues.com/clue/sotos-syndrome

Sotos syndrome (cerebral gigantism) is a rare genetic disorder characterized by excessive physical growth during the first 2 to 3 years of life. The disorder may be accompanied by autism, mild mental retardation, delayed motor, cognitive, and social development, hypotonia (low muscle tone), and speech impairments. Children with Sotos syndrome tend...
Found on
http://en.wikipedia.org/wiki/Sotos_syndrome

(so´tōs) cerebral gigantism.
Found on
http://www.encyclo.co.uk/local/21001

Type: Term Pronunciation: sō′tōs Definitions: 1. cerebral gigantism and generalized large muscles in childhood, with mental retardation and defective coordination; of unknown etiology. Most cases have been sporadic, perhaps new dominant mutations with low fitness, but there is one set of concordant identical twins on record.  .....
Found on
http://www.medilexicon.com/medicaldictionary.php?t=88223
No exact match found.