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what is angelman syndrome
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What Is Angelman Syndrome?

Angelman syndrome (AS) is a neurogenetic disorder characterized by intellectual and developmental delay, sleep disturbance, seizures, jerky movements (especially hand-flapping), frequent laughter or smiling,…

what is aquagenic urticaria
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What Is Aquagenic Urticaria?

What Is Aquagenic Urticaria? Aquagenic urticaria, or water allergy, is one of a number of forms of urticaria – such as aversions to the sun