About Hypereosinophilic Syndrome
The root causes of hypereosinophilic syndrome (HES) involve two main mechanisms:
- Increased production and buildup of eosinophils: An increased number of eosinophils can result from genetic changes or signals in the body that make these cells grow and survive longer than usual. This buildup of eosinophils can lead to health problems when they start to affect organs.
- Continued activation of eosinophils: This can lead eosinophils to release certain substances that harm tissues and organs. The reasons for this ongoing activation aren’t fully known.
Non-modifiable risk factors cannot be changed or controlled. These include:
- Old age
- Male sex
- Family history of early coronary artery disease (CAD): A disease where the heart’s blood vessels become narrow, making it harder for blood to flow to the heart
Modifiable risk factors potentially can be influenced or changed. These include:
- Systemic arterial hypertension: High blood pressure throughout the body
- Hyperlipidemia: High levels of fat (cholesterol and triglycerides) in the blood
- Metabolic syndrome: A group of conditions, including high blood pressure, high blood sugar, extra body fat, and abnormal cholesterol levels. Together these increase the risk of heart disease, stroke, and diabetes.
- Insulin resistance: When the body doesn’t respond well to insulin, a hormone that helps control blood sugar levels
- Diabetes mellitus: A condition where blood sugar levels are too high
- Smoking
- Obesity
- Low physical activity
- High levels of lipoprotein (a): A type of cholesterol that can increase the risk of heart disease
- High levels of fibrinogen: A protein in the blood that helps with blood clotting
It's important to note that these risk factors are not exclusive to HES and may also contribute to other cardiovascular conditions. It's always advisable to consult with a healthcare professional for personalized advice on managing these risk factors.
Symptoms of hypereosinophilic syndrome depend on which organs are affected. General common early symptoms may include:
- Rash, often itchy with swollen lumps
- Weight loss
- Fevers
- Night sweats
- Fatigue
- Muscle aches
- Dizziness
Symptoms that may develop as HES progresses include:
- Confusion
- Speech impairment
- Visual changes
- Memory Loss
When specific organs are involved, symptoms can include:
- Coughing, trouble breathing and frequent upper respiratory infections if the lungs are affected
- Stomach or abdominal pain, vomiting, and diarrhea if the digestive system is affected
- Muscle aches or joint pain.
- Shortness of breath, chest pain, heart palpitations, and signs for heart failure like swelling in the ankles if the heart is affected
It's important to note that individuals with HES can experience a wide range of symptoms, and the specific symptoms can vary depending on which parts of the body are affected. If you are experiencing any of these symptoms, it's important to consult with a healthcare professional for an accurate diagnosis and appropriate management.
To diagnose hypereosinophilic syndrome, health care providers commonly perform the following examinations, tests, and procedures:
- Medical history: The doctor will ask about your symptoms and any previous diagnoses.
- Physical exam: The health care provider will check for signs of damage caused by high eosinophil levels, like skin rashes, swelling, breathing issues, heart sounds, belly pain, or joint pain.
- Lab tests: These may include a blood draw to check for elevated eosinophil levels or other abnormalities.
- Imaging studies: X-rays or MRI (magnetic resonance imaging) scans may be recommended to visualize the affected areas of the body.
Additional examinations, tests, and procedures may be conducted based upon initial findings and individual factors. These may include:
- Further lab tests: These may include specific blood tests to assess organ function and detect any underlying genetic abnormalities.
- Biopsy: A sample of affected tissue may be taken for examination under a microscope to determine the extent of tissue damage.
- Echocardiogram (heart ultrasound): This test uses sound waves to create images of the heart and can help evaluate heart function.
It's important to follow up with your health care provider if your symptoms worsen or change after these initial examinations. They will recommend additional tests or procedures as necessary.
The goals of treatment for hypereosinophilic syndrome are to prevent and reverse organ damage, improve symptoms, and reduce eosinophilic inflammation. Here are some of the recommended treatments and how they work to achieve these goals:
- Oral corticosteroids (OCS): These medications reduce inflammation and calm down the immune system, so it doesn’t attack healthy tissues as much.
- Immunosuppressive/cytotoxic (chemotherapy) therapies: These medications also work by calming or suppressing the immune system to prevent it from causing harm.
- Anti-IL-5 monoclonal antibody: Mepolizumab is an example of this therapy. It targets a specific protein that helps eosinophils grow and survive, which lowers the number of eosinophils in the body.
- Tyrosine kinase inhibitor: Imatinib is an example of this treatment, specifically effective for patients who have a specific genetic marker called the FIP1L1-PDGFRA fusion gene.
Additional treatments may be recommended based upon symptoms from specific organs impacted by HES.
It's important to note that these are general recommendations and treatment decisions should be made on a case-by-case basis. Always consult with a healthcare professional for personalized advice.
Medication dosing may be affected by many factors. Check with your health care professional about dosing for your individual situation. Side effects can occur. Check with your health care professional or read the information provided with your medication for side effect information.