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:

Abstract —A new case of cardio - facio - cutaneous syndrome is reported , with particular reference to the presence of typical lesions of _acanthosis nigricans_ in the axillae . The patient is a 17 - year - old male presenting general features of mild mental retardation , anomalies in the craniofacial phenotype and hypertrophic cardiomyopathy . At the cutaneous level , he presented disseminated follicular hyperkeratosis with cicatricial alopecia in the eyebrows , multiple pigmented nevi , acanthosis _nigricans_ in the axillae and curly hair .
mild mental retardation