title: Manifestations of severe vitamin D deficiency in adolescents: effects of intramuscular injection of a megadose of cholecalciferol.
abstract: We recorded the manifestations of severe vitamin D deficiency (VDD) in 40 adolescents before and 3 and 6 months after treatment with a mega dose of cholecalciferol (10 000 IU kg(-1), max 600 000 IU). Significant improvement of symptoms related to VDD was reported in 34/40. Three months after the injection, serus calcium, phosphate, alkaline phosphatase and parathormone were normal in all adolescents with VDD with 25-hydroxyvitamin D (25OHD) level = or >20 ng ml(-1). After 6 months, the majority had 25OHD level <20 ng ml(-1). Two patterns of radiological changes have been recorded with complete healing achieved in all patients after a year of therapy. A mega dose of cholecalciferol is an effective therapy for treatment of VDD in adolescents for 3 months but not for 6 months. Radiographs of the ends of long bones are still valuable tool for diagnosis and follow-up of these patients.
authors.affiliation: Department of Pediatrics, Hamad Medical Center, PO Box 3050, Doha, Qatar. ATSOLIMAN@yahoo.com
authors.forename: Ashraf T
authors.initials: AT
authors.lastname: Soliman
authors.forename: Ashraf
authors.initials: A
authors.lastname: Adel
authors.forename: Magda
authors.initials: M
authors.lastname: Wagdy
authors.forename: Maryam
authors.initials: M
authors.lastname: Alali
authors.forename: Elsaid M
authors.initials: EM
authors.lastname: Aziz Bedair
mesh_terms: D000293:Adolescent; D000469:Alkaline Phosphatase / Q000097:blood; D018771:Arthralgia / Q000209:etiology; D001416:Back Pain / Q000209:etiology; D015415:Biomarkers / Q000097:blood; D050071:Bone Density Conservation Agents / Q000008:administration & dosage / Q000627:therapeutic use*; D002118:Calcium / Q000097:blood; D002762:Cholecalciferol / Q000008:administration & dosage / Q000627:therapeutic use*; D005260:Female; D006801:Humans; D007273:Injections, Intramuscular; D007717:Knee / Q000000981:diagnostic imaging; D008297:Male; D018908:Muscle Weakness / Q000209:etiology; D010281:Parathyroid Hormone / Q000097:blood; D010758:Phosphorus / Q000097:blood; D011446:Prospective Studies; D011780:Qatar; D011859:Radiography; D018570:Risk Assessment; D012307:Risk Factors; D012720:Severity of Illness Index; D016896:Treatment Outcome; D014808:Vitamin D Deficiency / Q000097:blood / Q000150:complications / Q000175:diagnosis / Q000188:drug therapy*; D016138:Walking; D014953:Wrist / Q000000981:diagnostic imaging
chemical_list: D015415:Biomarkers; D050071:Bone Density Conservation Agents; D010281:Parathyroid Hormone; D002762:Cholecalciferol; D010758:Phosphorus; D000469:Alkaline Phosphatase; D002118:Calcium