Have you ever felt like your little one is a little weaker than other children, or that they have trouble holding their neck straight? Or maybe your older child is constantly falling or having trouble climbing stairs? You might think these are normal things and dismiss them, but today we are going to talk about a serious reason that can sometimes be behind them. That is Spinal Muscular Atrophy , or SMA as we doctors call it.
Okay, so what is this SMA?
Simply put, this is a genetic disease. In order for the muscles in our body to move and work, a message needs to come from the brain to those muscles. These messages are carried by special nerve cells (motor neurons) in our spinal cord. To be precise, these nerve cells are the ones that give the command to the muscles to "contract" and "extend."
In SMA, a genetic defect causes these nerve cells to gradually weaken and die. Think of it like a wire that carries electricity to an electrical appliance gradually becoming damaged, reducing the amount of electricity it can carry. In the same way, as nerve cells weaken, the messages they send to the muscles also weaken. As a result, the muscles gradually shrink and lose strength due to lack of use. This is what we call muscular atrophy.
What are the main types of SMA?
SMA does not affect everyone the same. It is divided into several main types based on the age at which symptoms begin and the severity of the disease. The developmental milestones a child reaches during their development - such as holding their neck, sitting up, and walking - are very important in this classification.
To make it easier to understand, let's look at these types in a table.
| SMA type | Age of onset of symptoms | Main features and status |
|---|---|---|
| Type 0 | Before or immediately after birth | A very severe and rare type. Usually fatal. |
| Type 1 | From birth to 6 months | The most common type. Unable to hold the neck up. Limbs and limbs floppy. Unable to sit without support. Difficulty breathing and swallowing. |
| Type 2 | Between 3 and 15 months | Can sit without support, but cannot stand or walk. Weakness is less in the arms than in the legs. Difficulty breathing during sleep may occur. |
| Type 3 | After 18 months to young adulthood | Able to walk and stand independently, but has frequent falls, difficulty climbing stairs, and difficulty getting out of a chair. Over time, wheelchair assistance may be required. |
| Type 4 | In adulthood (20s-30s) | A rare type. Mild muscle weakness and mild breathing difficulties may occur. Symptoms develop very slowly. Life expectancy is not affected. |
Now let's talk about each of these types in a little more detail.
SMA type 1 (Werdnig-Hoffmann disease)
This is the most common and severe type. These babies show symptoms before they are 6 months old. In most cases, symptoms begin to appear as early as 3 months. This is a very painful experience for a mother and father. The baby feels lifeless. Like a rag doll. The neck cannot be held straight. The limbs hang down. Since it is difficult to drink milk and even swallow food, nutritional deficiencies can occur. Also, the muscles that help with breathing are weakened, so the risk of respiratory infections is high. The sad fact is that many of these children do not survive 2 years.
SMA type 2 (Dubowitz disease)
This is a type of intermediate severity. Imagine, your child is sitting well and playing, but does not try to get up or walk by 6-7 months. This is the second type of condition. Symptoms usually begin before the child can stand up and walk on their own. These children may have a little more strength in their arms than in their legs. But they are not able to stand up and walk on their own. As they grow older, perhaps in their teens, they may need support to sit up. They may also have difficulty breathing during sleep, so this should also be taken into account. Depending on the severity of the symptoms, life expectancy may be shorter than normal.
SMA type 3 (Kugelberg-Welander syndrome)
This is a relatively mild form. Symptoms of this type appear from 1 1/2 years (18 months) to adolescence. These children can walk and stand on their own. However, the problem is that they fall frequently, have difficulty running and jumping, and find it very difficult to get up from a chair or climb stairs. As the muscles weaken over time, they may need the assistance of a wheelchair later in life. But the good news is that these children can live a normal life.
SMA type 4 (adult SMA)
This is a very rare type. Symptoms begin in adulthood, usually in the 20s or 30s. You may experience mild weakness in your arms and legs, and sometimes shortness of breath. These symptoms develop so slowly that some people don't even know they have the disease for years. It doesn't affect life expectancy.
Remember, in cases like this, the most important thing is to diagnose the disease as soon as possible and seek proper medical advice.
What do you do if you see symptoms like these?
If you suspect that your child has any of the symptoms listed in this article, please do not panic and immediately consult a qualified doctor, especially a pediatrician. Do not try to diagnose yourself based on the internet or hearsay. This can be dangerous. The doctor will examine your child and, if necessary, refer you for genetic tests to confirm the exact nature of the condition. If the condition is confirmed, you will be informed about the specific type of management, physiotherapy, and new and emerging treatments.
Take-Home Message
- Spinal Muscular Atrophy (SMA) is a genetic disease that causes muscle wasting due to weakening of the nerves in the spinal cord.
- There are several main types, depending on the age at which symptoms begin and the severity.
- If you notice signs of your baby being floppy, having developmental delays, or falling frequently, don't ignore it.
- It is very important to avoid self-diagnosis and immediately see a qualified doctor for proper advice.
💬 අදහස් (0)
තවමත් කිසිදු අදහසක් පළ කර නොමැත. ඔබේ අදහස පළමු වරට මෙහි එක් කරන්න.
ඔබේ අදහස එක් කරන්න