G71.1: Myotonic disorders
You have a muscle disorder as a result of which you can probably not relax your muscles properly.
Your disorder may be hereditary. If so, other members of your family may be affected. The disorder is also sometimes caused by medications, for example.
The disorder may cause a variety of symptoms. The muscles may not be relaxing properly. In that case the muscles will feel stiff. Some muscles may also get weaker or become sore. Normal movement may become impossible.
The disorder may also affect other organs. Then, the person may sometimes become very tired, or be unable to see properly. In some cases, the disorder also affects the respiratory muscles and the heart muscles. Then breathing often becomes more difficult and the person may be seriously ill.
Additional indicator
On medical documents, the ICD code is often appended by letters that indicate the diagnostic certainty or the affected side of the body.
- G: Confirmed diagnosis
- V: Tentative diagnosis
- Z: Condition after
- A: Excluded diagnosis
- L: Left
- R: Right
- B: Both sides
Further information
Source
Provided by the non-profit organization “Was hab’ ich?” gemeinnützige GmbH on behalf of the Federal Ministry of Health (BMG).