Background: Nowadays, the allergic diseases are affecting the population at worldwide level and Cuba does not escape to this, inside the aeroallergens that trigger the crises we can find the pollens. The main goals of this study were to determine the allergenic sensitization to pollens in allergic patients and their relationship with the presence of allergic diseases.Methods: A cross-sectional descriptive observational study was performed in patients suffering from asthma, rhinitis, allergic rhino-conjunctivitis, atopic dermatitis and allergic conjunctivitis. All patients underwent an allergic clinical history and skin prick test with allergenic extracts of Helianthus annus, Cosmos bipinnatus, Cynodon dactylon, Quercus sp, Eucalyptus sp . Frequencies and percentages were determined for its analysis.Results: Thirty-three patients were studied. The average age was found in the third decade of life, with a predominance in women. More than half of the patients were sensitized to pollens and 24.24% of them were polysensitized; the most frequent pollen was the cynodon dactylon . The patients with rhinitis were the most sensitized with the pollens.Conclusions: There is sensitization to pollen in our patients.