Do you also feel like you're just not feeling well, getting sick all the time, or bleeding from even a small cut, whether you're undergoing cancer treatment or some other illness? Behind these things, there may be myelosuppression , a condition in which the bone marrow doesn't function properly . Don't worry, let's talk about this simply.
What is myelosuppression? To be precise, is it a weakening of the bone marrow?
Simply put, yes! Bone marrow is the soft, spongy tissue inside your bones. Think of it like our body's blood-making factory . This factory produces billions of red blood cells, white blood cells, and platelets, which are essential for our survival, and adds them to our blood. Each type of cell has a different function for our body. The bone marrow increases or decreases this production depending on our body's needs.
Now, in a condition called myelosuppression , the work of this bone marrow factory is disrupted for some reason. Then, blood cells and platelets cannot be produced properly. The main reason for this is chemotherapy treatment for cancer. However, some types of blood cancers and some viruses can also cause bone marrow failure.
What are the symptoms of myelosuppression?
The symptoms can vary from person to person, depending on whether your bone marrow produces red blood cells, white blood cells, or platelets.
If red blood cells decrease - Anemia
Red blood cells carry oxygen throughout your body. When there are not enough of them , anemia develops. Symptoms can include:
- Fatigue
- Shortness of breath / dyspnea
- Dizziness
- Fast or irregular heartbeat / arrhythmia
- Sensation of a ringing sound in the ears, sometimes accompanied by a "thumping" sound and heartbeat (Pulsatile tinnitus)
- Headache
- Paleness of the skin color
- Chest pain
Neutropenia - a decrease in white blood cells (especially neutrophils)
White blood cells fight germs that enter our bodies and protect us from infections . One type of white blood cell is called neutrophils . When the bone marrow produces fewer neutrophils due to myelosuppression, the condition is called neutropenia . Neutropenia does not have any specific symptoms, but it can lead to frequent infections . That's when symptoms appear.
- Fever (sometimes called febrile neutropenia )
- Tiredness
- Sore throat/infection (Sore throat/pharyngitis)
- Swollen lymph nodes
- Ulcers in the mouth or around the anus
- Diarrhea
- Burning when urinating, feeling like you need to urinate quickly, frequent urination
If platelets decrease - Thrombocytopenia
Platelets help control bleeding . When these levels decrease, a condition called thrombocytopenia occurs. This can cause:
- Bleeding that doesn't stop for a long time, even from a small wound, or difficulty stopping a nosebleed.
- Bruises appear more quickly than usual.
- The appearance of small red spots (like a rash) on the lower legs - this is called petechiae .
- Red, purple, or brown spots on the skin - this is called purpura .
If all blood cell types are reduced - Pancytopenia
Sometimes, all three of these blood cells—red blood cells, white blood cells, and platelets—can be low at the same time . This condition is called pancytopenia . Like neutropenia, this is not a disease in itself, but it can be a sign of an underlying medical condition.
Why does myelosuppression occur? What are the causes?
As we mentioned before, chemotherapy is the most common cause . However, there are other causes as well.
Chemotherapy, immunotherapy, and myelosuppression
Several types of chemotherapy drugs can cause this. Some of the most common are:
- Fluorouracil
- Oxaliplatin
- Irinotecan
- Capecitabine
Additionally, CAR T-cell therapy, a type of immunotherapy , can also impair bone marrow function and reduce blood cell and platelet production.
Blood Cancers and Myelosuppression
Some blood cancers can also interfere with normal blood cell production. For example, in cancers such as leukemia, lymphoma, and myeloma , abnormal cancer cells grow too much in the bone marrow and stop the production of healthy blood cells and platelets.
Viruses and myelosuppression
Some viral infections can also disrupt the blood-forming process in the bone marrow. Imagine that when a virus enters the body, our body's defenses, namely white blood cells, fight the virus. During this fight, the bone marrow may produce a small amount of red blood cells and platelets. Some studies suggest that some viruses directly infect the blood-forming cells in the bone marrow, reducing the number of blood cells. Some viruses that have been found to be associated with this condition of myelosuppression are:
- Epstein-Barr virus (EBV)
- Hepatitis C virus
- Parvovirus B19
- Cytomegalovirus (CMV)
- The virus that causes chickenpox (Chickenpox / varicella zoster)
- Human immunodeficiency virus (HIV)
- Dengue fever
Can myelosuppression cause serious complications?
Yes, sometimes this can lead to life-threatening complications . For example, a sudden drop in red blood cells (acute anemia) or a drop in platelets (uncontrollable bleeding) .
Important: If you experience any of these symptoms, especially if you are undergoing cancer treatment, it is very important to seek medical advice immediately.
How do doctors accurately diagnose this condition?
This is mainly diagnosed through blood tests . These blood tests check whether your bone marrow is producing blood cells and platelets normally.
Blood tests like these can be done:
- Complete blood count (CBC)
- MCV test (Mean corpuscular volume / MCV test)
- RDW test (Red cell distribution width / RDW test)
- Reticulocyte count
- Peripheral blood smear
- MPV test (Mean platelet volume / MPV test)
What are the treatments for myelosuppression?
Doctors treat this with these methods:
- If the cause of myelosuppression is chemotherapy, the dose of chemotherapy should be reduced or temporarily stopped .
- Blood transfusions to increase red blood cell and platelet levels.
- Giving you medications that help your bone marrow make more blood cells and platelets.
Can this situation be prevented from occurring?
Myelosuppression often occurs as a side effect of cancer treatments. Therefore, doctors are constantly on the lookout for these side effects during cancer treatment. They will check your blood tests regularly and make changes to your treatment plan if necessary.
What can I expect if I have myelosuppression?
Many people get this condition because they are receiving chemotherapy. If so, your doctor will closely monitor how the chemotherapy is affecting your bone marrow. You may need to take a short break from cancer treatment to allow your bone marrow to rebuild its blood cell count.
How do I take care of myself?
Myelosuppression can increase your risk of developing infections and bleeding . You can do these things to reduce this risk:
- Get vaccinations to protect against common viruses.
- Practicing good hygiene habits , such as washing your hands frequently and staying away from people who are sick.
- Protect yourself from situations where you could get hurt or cut . For example, be careful when using sharp weapons.
What questions should I ask my doctor?
You can ask the doctor questions like:
- Why do I have this myelosuppression condition?
- How does this condition affect my body?
- What treatment options do I have?
- Will treatment completely cure my myelosuppression?
Summary: What to remember (Take-Home Message)
Your bone marrow is an essential part of your body. Red blood cells that carry oxygen, white blood cells that fight infection, platelets that help your blood clot – they’re all made there. Myelosuppression is when your bone marrow stops working for some reason. The most common cause is chemotherapy for cancer, but it can also be caused by certain blood cancers and viruses. Don’t worry. Doctors will find the cause and treat it accordingly. The most important thing is to seek medical attention if you have any unusual symptoms and follow their advice carefully. You are not alone, and there are doctors who can help you on this journey.
` Myelosuppression, Bone Marrow Suppression, Bone Marrow, Red Blood Cells, White Blood Cells, Platelets, Chemotherapy, Cancer, Anemia, Neutropenia, Thrombocytopenia, Infections
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