Sexual development is thought to be unaffected, as evidenced by a single reported case of a woman with Angelman syndrome conceiving a female child who also had Angelman syndrome.The majority of those with AS achieve continence by day and some by night. Angelman syndrome is not a degenerative syndrome, and thus people with AS may improve their living skills with support.Dressing skills are variable and usually limited to items of clothing without buttons or zippers. Most adults can eat with a knife or spoon and fork, and can learn to perform simple household tasks. Particular problems which have arisen in adults are a tendency to obesity (more in females), and worsening of scoliosis if it is present. The affectionate nature may also persist into adult life where it can pose a problem socially, but this problem is not insurmountable. People with Angelman syndrome appear to have a reduced but near-normal life expectancy, dying on average 10 to 15 years earlier than the general population. Epidemiology
Though the prevalence of Angelman syndrome is not precisely known, there are some estimates. The best data available are from studies of school age children, ages 6–13 years, living in Sweden and from Denmark where the diagnosis of AS children in medical clinics was compared to an 8-year period of about 45,000 births. The Swedish study showed an AS prevalence of about 1/20,000 and the Danish study showed a minimum AS prevalence of about 1/10,000. History
Harry Angelman, a pediatrician working in Warrington, England, first reported three children with this condition in 1965.
Familial eosinophilia is a rare congenital disorder characterized by the presence of sustained elevations in blood eosinophil levels that reach ranges diagnostic of eosinophilia (i.e. 500-1500/microliter) or, far more commonly, hypereosinophilia (i.e. >1,500/microliter). Although high eosinophil levels are associated with certain diseases and thought to contribute to the tissue destruction found in many other eosinophilia-related diseases (see clonal eosinophilia), clinical manifestations and tissue destruction related to the eosinophilia in familial eosinophilia is uncommon: this genetic disease typically has a benign phenotype and course compared to other congenital and acquired eosinophilic diseases. Presentation
Individuals with familial eosinophilia exhibit hypereosinophilia presumably from birth (earliest documentation at 4 months of age). Elevated blood levels of eosinophils are remarkably stable over time in affected family members. These individuals are generally detected on routine blood cell counts and at the time of diagnosis present without symptoms or at least no symptoms related to their eosinophilia. Their blood cell counts are typically normal except for  eosinophil numbers which range between ~2000 and 5000 cells/microliter (normal <450 cells/microliter). Peripheral blood smears revealed that eosinophils showed normal morphology, a finding distinctly different from many other types of hypereosinophilia in which blood smears commonly shown immature blood cells and eosinophils showing distinctly abnormal areas of cytoplasmic clearing. Ultrastructural changes characteristic of eosinophil activation (e.g. piecemeal degranulation of eosinophils and increases in the number of their lipid bodies), other eosinophil activation markers (e.g.