Do you sometimes get strange skin rashes? Do you also feel a little weak in your muscles? Maybe you also need to know about a condition called dermatomyositis. It's a rare disease, but it's worth being aware of.
What is Dermatomyositis?
Simply put, dermatomyositis is a rare condition that weakens your muscles and causes a rash that looks like eczema . It belongs to a larger group of diseases called myopathy. This means that it affects the muscles. Sometimes, if it gets severe , it can even affect breathing and swallowing. Think about it, our muscles are what make us move, so how difficult it is when they are damaged.
Dermatomyositis is a form of another muscle disease called polymyositis. However, in this case, in addition to the muscles, the skin is also affected. That is why the word 'derma' (pertaining to the skin) is added to the name.
If you have any of these symptoms, it is important to see a doctor immediately. In some cases, these symptoms can take months to appear. But sometimes they can appear very quickly. If treatment is started early, serious complications can be largely prevented.
Although very rare, this condition, called dermatomyositis , can be life-threatening, especially within the first year after symptoms begin. It has also been found to increase the risk of developing certain types of cancer.
What is the difference between Dermatomyositis and Lupus?
Dermatomyositis is a condition that has some similarities to lupus and other autoimmune diseases. However, experts still don't know exactly what causes dermatomyositis. That's why it's not classified as an autoimmune condition.
Now, if you have lupus, you may experience joint pain, skin sensitivity and eczema, as well as problems with your internal organs (specifically your brain, lungs, kidneys, and heart). Your symptoms may often flare up and then subside, and then come back in waves – we call these flare-ups.
However, dermatomyositis is characterized by muscle weakness and tissue death , along with a skin rash. It is diagnosed through blood tests, biopsies, and various imaging tests.
Whether it's dermatomyositis or lupus, it's important to diagnose and treat it as soon as possible. If you notice any new symptoms, see a doctor immediately.
Who is most likely to get this disease? How common is it?
Dermatomyositis can actually affect anyone, but some groups are more likely to develop it. These include:
- Young children between the ages of 5 and 15.
- Adults between 40 and 60 years old.
- Women.
It should also be noted that this disease is very rare . On average, only one in 100,000 people develop this disease per year. So you can see how rare this is.
How does this condition affect your body? Risk of cancer?
A condition called dermatomyositis can affect your body for the rest of your life.
Imagine, if this severely damages your muscles, you may not be able to use or move a part of your body properly. This usually takes years to develop. But some people may develop severe muscle weakness more quickly than others.
Another thing is that dermatomyositis has also been found to increase the risk of developing certain types of cancer .
Dermatomyositis and cancer
About 15% of people with dermatomyositis develop cancer later in life. The most common types of cancer seen in people with dermatomyositis are:
- Ovarian cancer
- Lung cancer
- Lymphoma
- Breast cancer
- Colon cancer
Therefore, it is very important to talk to your doctor about your cancer risk and what tests you may need.
What are the symptoms of this disease?
The two main and most common symptoms of dermatomyositis are muscle weakness and a skin rash.
Some people may experience both muscle weakness and skin rash at the same time. However, sometimes one symptom may be present for weeks, months, or even years without the other.
Muscle weakness
Muscle weakness can make it difficult for you to do some everyday things. For example:
- Sitting up straight.
- To get up from a sitting position (such as from a chair or sofa).
- Climbing the stairs.
- Getting up from lying in bed.
- Washing your hair.
Imagine how helpless you would feel if you couldn't do simple things like this.
Eczema
Dermatomyositis can cause a rash on your skin (especially in areas exposed to the sun ). The skin may change color and become swollen. The most common areas where this rash appears are:
- Eyelashes and around the eyes.
- The front of the chest and shoulders (sometimes called a 'V-sign rash').
- The back of the neck and shoulders (also called 'shawl sign rash').
- Skull.
Other symptoms
In addition, dermatomyositis can also cause symptoms such as:
- Skin discoloration and bumps on the hands, especially around the knuckles (sometimes called Gottron papules).
- Calcium deposits under the skin, inside the muscles, or in connective tissues.
- Lumps in the knees or elbows.
- Skin cracking around the nail and visible blood vessels at the tip of the nail.
- Joint pain.
Some people (especially young children) develop dermatomyositis, outgrow it as adults, and never have symptoms again. However, in about 80% of cases, it becomes chronic – meaning it comes back time and time again – and causes symptoms throughout life.
What causes this?
Experts still don't know the exact cause of dermatomyositis, but there are several factors that are thought to contribute to it:
- Genetic factors: Some studies suggest that dermatomyositis may be a genetic disease, meaning it can be passed down through generations.
- Autoimmune issues: As mentioned earlier, dermatomyositis is a disease similar to many autoimmune diseases in which the body's immune system attacks healthy tissues.
- Viral infections: There is some evidence that some people may develop a viral infection, even after it has resolved, that can trigger a condition called dermatomyositis.
- Environmental factors: Some studies have also found that people who live in areas with high levels of pollution or poor air quality are more likely to develop dermatomyositis.
How is this disease diagnosed?
Dermatomyositis is usually diagnosed through blood tests and small samples taken from your skin and muscles (biopsies) .
Your doctor will test your blood to see:
- Whether there are increased levels of specific muscle enzymes that indicate muscle damage.
- Autoantibodies are cells that indicate that the immune system is responding to something it recognizes as harmful.
You may also need to have a skin biopsy taken from the rash. Your doctor may also want to take a muscle biopsy to check for swelling inside your muscles.
You may also have one of several imaging tests. These tests allow your doctor to examine your muscles, nerves, lungs, and other organs. These tests can help determine whether your symptoms are due to dermatomyositis or another problem. The most common imaging tests used to diagnose dermatomyositis are:
- Magnetic Resonance Imaging (MRI)
- Chest X-ray.
In some cases, your doctor may also order a test called electromyography (EMG). This test measures the electrical activity that occurs when muscles or nerves are stimulated.
How is it treated?
Here are some of the treatments available for dermatomyositis:
- Corticosteroids: This type of medication reduces swelling in your muscles.
- Physical therapy: Physical therapy (and exercise in general) can help rebuild the damage your muscles have done. The stronger your muscles are, the better they will be able to withstand the damage caused by dermatomyositis.
- Immunosuppressant medicines: These medicines stop your immune system from attacking healthy cells and tissues. They can reduce the damage your body's defense system does to your muscles.
- Intravenous immunoglobulin (IVIg): IVIg is a supplement to your blood plasma, which is a component of immunoglobulin that is naturally present in your blood. IVIg treatment can be given in conjunction with immunosuppressive drugs, or as an alternative treatment.
- Speech therapy: If you have weakness in the muscles in or around your throat, speech therapy can strengthen the muscles in your throat that help you swallow food.
The type of treatment you need will depend on where your symptoms are and how severe they are. Talk to your doctor about what to expect and when certain treatments may be needed.
How to manage symptoms?
Managing the symptoms of dermatomyositis is likely to be a long-term process – perhaps your entire life.
- If your doctor, physical therapist, or speech therapist gives you exercises, do them exactly as directed, for the number of times they tell you. This will help keep your muscles as strong as possible.
- Take the medicine exactly as prescribed by the doctor, for the entire duration.
- Avoid exposure to UV rays. Limit your time in the sun, avoid using indoor tanning beds, and stay indoors or in the shade when you are outside.
- Use sunscreen whenever you know you're going to be outside. Make sure your sunscreen has an SPF of at least 50, and reapply every two hours.
If you have dermatomyositis, it's important to see your doctor regularly. He or she can monitor your symptoms and check for any changes in your muscles or skin.
What can you expect when living with this disease?
There is no permanent cure for dermatomyositis, so you can expect to manage your symptoms for the rest of your life.
Even with treatment, about 80% of people have chronic dermatomyositis (sometimes called polycyclic dermatomyositis). This means your symptoms may come and go throughout your life. See a doctor as soon as you notice any signs of worsening symptoms.
About two-thirds of people with dermatomyositis develop some form of physical disability due to muscle damage.
Dermatomyositis is fatal in approximately 5% of people diagnosed with the disease. This risk is particularly high within the first year of diagnosis. However, about 20% of people with dermatomyositis go into long-term remission. This means they can live without symptoms for a long time.
Some symptoms and other factors can increase the risk of death. Examples include:
- If treatment is delayed by more than six months.
- If you are over 60 years old.
- If you experience severe symptoms.
- If you have symptoms in your throat, lungs, or heart.
- If you have cancer or if it develops new.
When should you see a doctor?
If you notice new weakness in your muscles, especially if you have a skin rash, see a doctor right away. The sooner dermatomyositis is diagnosed, the sooner you can start treatment. This can reduce the risk of severe symptoms and other complications.
Also ask how often you should see your doctor to monitor your symptoms and changes in your muscles or skin.
What questions should you ask your doctor?
It's normal to have questions when learning about a disease like this. You can ask your doctor questions like:
- Do I have dermatomyositis or another condition?
- What kind of tests do I need to do?
- What kind of treatment do I need, and how long will it take?
- Will I need cancer screening?
It's normal to feel really scared when you learn that you have a condition like dermatomyositis. It's a shock to learn about a condition that can affect you for the rest of your life, and can even be fatal. But take it one step at a time. The sooner you get diagnosed, the sooner you can start treatment.
Talk to your doctor about planning your treatment and symptom management journey. He or she will explain what to expect next and what changes you need to make to prepare for if your dermatomyositis symptoms worsen.
Things to remember in brief
Dermatomyositis is a rare disease that causes muscle weakness and skin rashes.
- This can develop in anyone, but it is more common in children aged 5-15, adults aged 40-60, and women.
- It is very important to seek medical advice as soon as you notice symptoms. Prompt treatment can reduce complications.
- Although there is no permanent cure for this, symptoms can be controlled with treatment and management.
- Also talk to your doctor about your cancer risk.
- Don't worry, you're not alone. With the help of doctors and loved ones, you can cope with this situation.
` Dermatomyositis, muscle weakness, skin diseases, rashes, autoimmune diseases, cancer risk, physical therapy
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