Eosinophil disorders are conditions characterized by an abnormal increase in eosinophils, a type of white blood cell involved in the immune response. These disorders can result from various causes, including allergies, infections, and certain autoimmune diseases. Elevated eosinophil levels can lead to inflammation and damage in various tissues, affecting organs such as the lungs, skin, and gastrointestinal tract. Common eosinophil disorders include eosinophilic esophagitis, eosinophilic pneumonia, and hypereosinophilia. Symptoms may vary depending on the affected area but can include difficulty breathing, skin rashes, and digestive issues. Diagnosis typically involves blood tests and imaging studies to assess eosinophil levels and organ involvement.