Case Report: Duchenne Muscular Dystrophy in a 6-Year-Old Boy

Duchenne Muscular Dystrophy (DMD) is an X-link reccessive disorder, caused by mutation in dystrophin gene. Therefore body is incapable to synthesize dystrophin, the protein needed for muscle contraction. The incidence of DMD 1: 4000 male with age 3 to 5 years. Furthermore the patient will experience functional decline, loss of ambulation and early death due to cardiac or respiratory failure. Patient will be unable to walk at the beginning of second decade and usually decease at the age of 20s. Hereby we reported a male, 6-years-old presented with weakness on both of his legs. Patient had history of recurrent falls while walking and difficulty to climb stairs since 3-years-old. Patient also had difficulty to stand up immediately from sitting position. He had to grab his feet in order to make climb movement before stand up. Physical examination showed pseudo hypertrophy of calf muscle and positive Gower Maneuver. Laboratory examination showed creatinin kinase 16.891 (about 113 times higher than normal value). EMG revealed lesion of the muscle. Biopsy was taken from left muscle gastrocnemius and showed variability of muscle size without regeneration and fibrosis. The result of genetic test showed deletion of Dp427c and exon 1-2 of dystrophin gen. After been treated with corticosteroid for a year, the patient showed improvement in his gait moreover the weakness on both of his legs has became lessen. We emphasized the importance of early and accurate diagnosis of DMD for better quality of life.