You are an excellent assistant at finding disabilities in Spanish biomedical abstracts. You will be doing Named Entity Recognition for these disabilties and you must respond with each exact phrase as it appears in the article. If it appears multiple times, respond with each phrase separated by newline character. If there are no disabilities, respond with NA.

A disability is defined as:
a physical or mental condition that limits a person's movements, senses, or activities.


Abstract:

Prader - Willi Syndrome ( PWS ) is a genetic disorder with features that change with age . In infancy , PWS is characterized by hypotonia , feeding difficulties , developmental delay , and genital hypoplasia . In adolescence and adulthood , problems are centered on behavioral disorders , absence of satiety , and mild to moderate mental retardation . In the past two decades remarkable progress has been made in the understanding of its clinical manifestations and natural history , and treatments have been developed , such as growth hormone therapy and the use of psychoactive drugs , which can improve quality of life in these patients . However , knowledge about the management of PWS in adulthood is still poor . This article aims to provide an overall view of the most important clinical problems in adults with PWS . The issues included are obesity and its consequences , cardiovascular risk factors and diabetes , respiratory abnormalities , sleep disorders , hypogonadism , osteoporosis , and behavioral and psychiatric disorders .
feeding difficulties
developmental delay
behavioral disorders
mild to moderate mental retardation
sleep disorders
behavioral and psychiatric disorders