Duchenne muscular dystrophy (DMD) is a genetic disorder that primarily affects young males. While DMD is typically caused by a mutated gene, it can also occur sporadically in individuals without any apparent genetic mutation. This progressive disease gradually worsens over time, often leading to the loss of walking ability in early adolescence. Unfortunately, there is currently no known cure for DMD, and medical researchers have focused on providing symptomatic relief and improving the life expectancy of affected individuals. Despite medical advancements, individuals with DMD are not expected to live beyond their 40s.
Muscle Weakness: A Cause for Limited Mobility in Early Years
Decreased mobility is often observed in boys with Duchenne muscular dystrophy (DMD) during their early years. Although this condition typically manifests when boys should be initiating their walking, symptoms may not become apparent until around the age of five or six. Delayed walking is a prevailing symptom among affected children. However, it is important to note that the timing of a child’s first steps can vary, and a slight delay in walking may not necessarily indicate DMD. While some children take their first steps before their first birthday, others may do so later. Typically, individuals with DMD commence walking at around 18 months of age.
Challenges in Walking for Individuals with DMD
When observing a child with Duchenne muscular dystrophy (DMD) attempting to walk, it becomes apparent that their walking abilities are significantly impaired compared to those of their healthy peers. These children exhibit an unusual gait and struggle with navigating stairs. Running and jumping also pose considerable difficulties. Additionally, the simple task of standing up from the floor presents a significant challenge for them. In some instances, they may employ their hands to “walk” up their legs in order to rise from the ground. While it is common for toddlers to stumble and fall while learning to walk, children with DMD experience frequent falls due to the weakness in their leg muscles.