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Muscular Dystrophy / Duchenne Muscular Dystrophy - Diagnosis

Written by Dr. Varshini Jayaraman,  Ph.D. | Medically Reviewed by Dr. Ramya Ananthakrishnan, MD on Apr 30, 2016
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Diagnosis

1. Clinical examination

Clinical examination of a male child by the pediatrician raise suspicion of DMD

2. Creatinine Phosphokinase

Assay

As the muscle cells die, the affected cells release the enzyme creatinine phosphokinase (CPK) into the blood. Patients with DMD therefore have high levels of the enzyme in their blood (20 times the upper limit of normal). This test was the only available method to detect the presence of the disease, prior to 1982.

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3. Electromyography

An examination that tests the electrical activity of the muscle. In muscular dystrophy, the affected muscles display reduced electrical activity.

4. Muscle Biopsy

A test in which a small section of the affected muscle is examined for presence of minute changes under the microscope.

5. Dystrophin Assay

As patients with DMD have defective dystrophin gene, there is impairment in the production of the dystrophin protein. There is usually a complete deficiency of dystrophin in 99% of the patients with DMD. This assay is also used to distinguish DMD from other forms of muscular dystrophy. This form of diagnostic tool yields accurate results and can therefore be used to establish the diagnosis.

References:

  1. Basic Human Genetics - Elaine Johansen Mange & Arthur P. Mange
  2. Medical Genetics - Lynn B. Jorde, John C. Carey, Raymond L. White
  3. Muscular Dystrophy - (http://www.nlm.nih.gov/medlineplus/musculardystrophy.html)
  4. Muscular Dystrophy Information Page - (http://www.ninds.nih.gov/disorders/md/md.htm)

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Post a Comment

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Comments

venkatakula

Hello All, My son is also suffering with DMD.he is 4 years old,i am from hyderabad, Does anyone get a proper guidance to fight against this diseases. If someone seriously got something please share with everybody. It will be a very good help to all those parents and patients who suffers lot

machu73

i would like mto be recieving videos on surgery,i am studying to be to be a surgeon.

anujverma

HELLO SIR MY NAME ANUJ .I AM 21 YEAR ONLY.. ME ALSO SUFFER IS PROBLEM 13 YEAR AND ME ALSO TAKE VITIMIONS AND EXCRSCIZE REGULERLLY BUT NO IMTRVEMENT PLZ HELP ME.. AND GIVE ME REPLY ..MY CONTACT NUMBER .8090875430

anujverma

helloo sir plz hel

Shiv.kumar

I have a hope for MD. May slow down the progression of MD and even stop the progression after 10-12 months. contact- 09416185485. many patients treated locally and posting this after 1 year of slowing down the 80% progression in them. Wishing a long and healthy life HAPPY FACES PRODUCE SMILES

anujverma

hello shiv mai anuj hu mujhko bhi yai problam hai plz kya tum thodi help kr skte ho plz dear plz call me 8090875430 plz ..

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