Alergia, jako maska Pierwotnych Niedoborów Odporności.

Primary Immunodeficiencies (PIDs) are more common than we think. The most common PNO, is isolated IgA deficiency, occurs in the Caucasian population with a frequency of 1:500. These deficiencies are the result of one or more parts of the immune system missing, weakened or not working properly. Allergy also results from an abnormality in the immune system, so it is assumed to be associated with Primary Immunodeficiencies. It has been shown that allergies are more common in patients with PID, and it has been proven that allergy symptoms may precede or even mask symptoms of PID, making diagnosis difficult, which is associated with a delay in the correct diagnosis of deficiency and a worse prognosis for these patients. [ABSTRACT FROM AUTHOR]