title: Benign prognosis in idiopathic hyper-CK-emia.
abstract: We report on the long-term follow-up in 31 patients with idiopathic hyper-CK-emia. At referral, all patients underwent a neurological interview and examination. Ancillary investigations included an open muscle biopsy and electromyography (EMG) in almost all, and other ancillary tests in some patients. After a follow-up period of 7.2 (mean; range 4-18) years, 74% of the patients had a final evaluation. The most common complaints at referral were fatigue and myalgia. EMG and muscle biopsy demonstrated minor, non-diagnostic abnormalities in 30 and 71% of patients, respectively. At follow-up, the pattern and the number of complaints had not changed substantially. One patient developed a sensory polyneuropathy. Neurological abnormalities were absent in all other patients. In conclusion, long-term follow-up of patients with idiopathic hyper-CK-emia does not reveal clinical deterioration. It seems justifiable to refrain from routine long-term follow-up in these patients.
authors.affiliation: Department of Neurology - G03.228, Utrecht University Medical Center, 3508 GA, Utrecht, The Netherlands. jreijnev@neuro.azu.nl
authors.forename: J C
authors.initials: JC
authors.lastname: Reijneveld
authors.forename: N C
authors.initials: NC
authors.lastname: Notermans
authors.forename: W H
authors.initials: WH
authors.lastname: Linssen
authors.forename: J H
authors.initials: JH
authors.lastname: Wokke
mesh_terms: D000293:Adolescent; D000328:Adult; D003402:Creatine Kinase / Q000097:blood*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D009426:Netherlands; D009468:Neuromuscular Diseases / Q000175:diagnosis*; D011237:Predictive Value of Tests; D011379:Prognosis; D012189:Retrospective Studies; D044465:White People
chemical_list: D003402:Creatine Kinase