Myotonic Dystrophy 2, also known as myotonic dystrophy type 2, is related to myotonic dystrophy and immature cataract, and has symptoms including muscle cramp, muscle rigidity and muscle spasticity. An important gene associated with Myotonic Dystrophy 2 is CNBP (CCHC-Type Zinc Finger Nucleic Acid Binding Protein). The drugs Lamotrigine and Diclofenamide have been mentioned in the context of this disorder. Affiliated tissues include skeletal muscle and eye, and related phenotypes are cataract and myotonia