diabetes mellitus acanthosis nigricans acanthosis nigricans-insulin resistance-muscle cramps-acral enlargement syndrome https://github.com/monarch-initiative/mondo/issues/5723 https://www.malacards.org/card/acanthosis_nigricans_insulin_resistance_muscle_cramps_acral_enlargement_syndrome https://www.malacards.org/card/acanthosis_nigricans_with_muscle_cramps_and_acral_enlargement acanthosis nigricans muscle cramps acral enlargement familial insulin resistance with acanthosis nigricans, acral hypertrophy and muscle cramps OMIM:200170 This syndrome is characterized by the association of acanthosis nigricans, insulin resistance, severe muscle cramps and acral hypertrophy. GARD:0000453 MEDGEN:348051 MESH:C536000 Orphanet:90301 UMLS:C1860215 MONDO:0008696 epidermal disease