What does it mean if the eosinophil percentage is high, and what should be done?

Generally, an elevated percentage of eosinophils may be caused by drug allergy, hay fever (pollinosis), bronchial asthma, urticaria, or necrotizing vasculitis. Patients can receive symptomatic treatment based on the specific underlying cause. The detailed analysis is as follows:

1. Drug Allergy

Drug allergies may lead to systemic allergic rashes, resulting in an increased eosinophil percentage. Patients can take medications such as loratadine tablets or cetirizine hydrochloride oral solution under medical guidance. It is important to follow the doctor's instructions when taking medication to avoid allergic reactions.

2. Hay Fever (Pollinosis)

Hay fever is an allergic condition primarily triggered by an immune response to plant pollen. When pollen enters the body, the immune system mounts an allergic reaction that activates eosinophils, leading to an increased eosinophil count. Patients may use calamine lotion or hydrocortisone cream under a physician’s direction for treatment.

3. Bronchial Asthma

This condition is usually caused by psychological factors, changes in weather, or similar triggers. Blood tests often show a significant increase in eosinophils, commonly accompanied by symptoms such as wheezing, shortness of breath, and chest tightness. Under medical supervision, patients may use medications such as salmeterol fluticasone inhalation aerosol, ephedrine-diphenhydramine tablets, or prednisone acetate tablets. Regular follow-up visits are recommended.

4. Urticaria

Urticaria is typically caused by friction, pressure, sunlight exposure, or similar factors, and is often accompanied by localized edematous wheals and itching. Patients can take fexofenadine hydrochloride tablets or loratadine capsules as directed by a physician. With medical guidance, patients may also engage in moderate aerobic exercises such as walking, jogging, or swimming.

5. Necrotizing Vasculitis

Necrotizing vasculitis is a group of inflammatory diseases affecting blood vessel walls. In this condition, the immune system becomes abnormally active and attacks the body's own vascular tissues, causing inflammatory damage and necrosis of blood vessels. During the inflammatory process, white blood cells accumulate around damaged vessels and release inflammatory mediators, which can significantly increase eosinophil counts. Patients may be treated with prednisone acetate tablets or ifosfamide for injection under a doctor's supervision.

In addition to the above causes, other conditions such as psoriasis and eosinophilia may also contribute. If patients experience discomfort after examination, they should actively cooperate with their doctors for timely treatment to avoid delays in care.