The aim of this report is to verify the demographic, clinical, laboratorial and histopathological findings of patients with CSS followed in a University Clinical Hospital. We reviewed the medical records of all patients with the diagnosis of CSS. Only patients who fulfilled ACR criteria were included. Five Caucasian patients were found, with a sex ratio M/F: 3/2. The mean age at disease onset was 46 years old (40 to 55) and the mean time of follow-up was 2.37 years (0.25 to 6). General symptoms, asthma, peripheral neuropathy and skin lesions were the most common clinical findings in all patients. Cardiovascular, gastrointestinal and renal involvement was found in one patient each. All patients presented hypereosinophilia (> 10%) and p-ANCA was present in 3 patients. The chest x-ray showed pulmonary parenchymal infiltrate in 2 cases and in 1 of them an unilateral pleural effusion. Skin biopsies showed extravascular eosinophylia in 3 out of 4. All patients were treated with prednisone and in 3 it was added immunosuppressive drug. No patient died during the follow-up. CSS is a rare disease with a multivisceral involvement and asthma is the main and the earliest symptom. General symptoms and involvement of skin and peripheral nerves were found in all patients. Renal, cardiovascular and gastrointestinal involvement was rare, differently from the literature series where these findings are more frequent. In spite of the CSS being a serious and life-threatening disease, these patients presented adequate response to the treatment and a favorable outcome.