Hypereosinophilic Syndrome
Medically reviewed by Drugs.com. Last updated on May 4, 2025.
Hypereosinophilic syndrome (HES) is a group of conditions that causes you to have too many eosinophils. An eosinophil is a type of white blood cell. Allergies, asthma, parasitic infections, and certain medicines may increase the number of eosinophils. Organs such as your skin, lungs, heart, or brain may be damaged if you have too many eosinophils. They may also harm your kidneys, intestines, liver, or spleen.
DISCHARGE INSTRUCTIONS:
Medicines:
- Medicines are used to decrease inflammation and swelling. You may also get medicine to decrease the number of eosinophils in your blood.
- Take your medicine as directed. Contact your healthcare provider if you think your medicine is not helping or if you have side effects. Tell your provider if you are allergic to any medicine. Keep a list of the medicines, vitamins, and herbs you take. Include the amounts, and when and why you take them. Bring the list or the pill bottles to follow-up visits. Carry your medicine list with you in case of an emergency.
Treatment options
The following list of medications are related to or used in the treatment of this condition.
Follow up with your healthcare provider as directed:
You may need to return for more tests. Write down your questions so you remember to ask them during your visits.
Contact your healthcare provider if:
- You have a fever.
- You have nausea that does not go away.
- You are dizzy and feel faint.
- You have chills, a cough, or feel weak and achy.
- You have questions or concerns about your condition or care.
Return to the emergency department if:
- You have severe chest or abdominal pain.
- You have sudden trouble breathing.
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The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.
Learn more about Hypereosinophilic Syndrome
Treatment options
- Medications for Central Nervous System Disorders
- Medications for Hypereosinophilic Syndrome
- Medications for Pulmonary Impairment
Care guides
Further information
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.