Becker muscular dystrophy

Becker muscular dystrophy or BMD is one of the nine types of muscular dystrophies characterized by muscle wasting and weakness which is mainly proximal. it is caused by mutations in the same genes as is the case with Duchenne muscular dystrophy. Becker muscular dystrophy is also caused by a mutation of the dystrophin gene, which is responsible for the body to make the protein dystrophin, that is essential for normal muscle function. However, BMD is less severe and is slow in its progression and generally, walking difficulties begin after the age of 16. Becker muscular dystrophy affects only boys and young men, and women are generally only the carriers of the mutated gene.

Symptoms of BMD

Becker muscular dystrophy affects the muscles of the hips, pelvic area, thighs and shoulders, as well as the heart. The symptoms typically start to surface during adolescence and become clearly noticeable by the time the child reaches his mid teens. The health of the patient worsens over time and shortens his life expectancy. The majority of people diagnosed with BMD do not survive beyond 40 or 50 years.

Some of the symptoms include:

• Delay in walking and running for young children
  
  
• Unexplained clumsiness
  
  
• Cramps during exercise
  
  
• Unable to join school sports
  
  
• Weak muscles near torso
  
  
• Enlarged calf muscles
  
  
• Difficulty lifting weights and climbing stairs
  
  
• Falling and finding it hard to get up again
  
  
• Heart problems
  
  
• Complete inability to walk
  
  
• Cardiomyopathy
  

Diagnosis and treatment

The following are some of the diagnostic tests conducted before confirming the Becker muscular atrophy. Serum test for assessing creatine kinase as raised CK levels call for further investigation.

• Genetic analysis to detect abnormal dystrophin gene
  
  
• Muscle biopsy - for dystrophin staining
  
  
• Testing for Cardiomyopathy
  

Treatment of BMD

There is no permanent cure for any muscular dystrophy. Becker muscular dystrophy needs to be managed according to the particular symptoms of each patient. The main aim of the treatment is to optimize the muscle functioning and increase the quality of the life. Physiotherapy, steroid medications, orthopaedic aids such as splints, braces, and genetic counseling go a long way in giving support to the patient.