Symptoms of Kufs can manifest anytime between adolescence and adulthood, however it usually appears around age 30. There are two types of Kufs:[2] Type A and Type B. Type A causes seizures, myoclonic epilepsy (muscle jerks), dementia, ataxia (compromised muscle coordination), tremors and tics, dysarthria (speech difficulties), confusion, and psychotic behaviour. Although similar to Type A, patients with Type B do not suffer from myoclonic epilepsy or dysarthria, and they do display changes in personality.