Pollinosis is induced by pollen allergens, IgE-mediated and affects the respiratory system, cutaneous system, etc. Its prevalence is gradually increasing. The pollen map and calendar are acquired through pollen monitoring. Pollinosis is affected by meteorological factors and results in thunderstorm asthma. It is associated with food allergy, which can induce oral allergy syndrome and even anaphylaxis. In addition, pollinosis may progress from allergic rhinitis to asthma. Laboratory investigations for pollinosis include in vivo and in vitro tests. Pollen prevention, medication, and immunotherapy are the primary treatment modalities, and omalizumab is effective and safe.

ORCID Michele Buonomo https://orcid.org/0000-0003-1688-8297 Jenna L. Ruggiero https://orcid.org/0000-0003-3525-7001 Erin Warshaw https://orcid.org/0000-0001-6177-0656 REFERENCES 1. Frampton JE, Wagstaff AJ. Azelaic acid 15% gel: in the treatment of papulopustular rosacea. Am J Clin Dermatol. 2004;5(1):57-64. 2. Gupta AK, Gover MD. Azelaic acid (15% gel) in the treatment of acne rosacea. Int J Dermatol. 2007;46(5):533-538. 3. Linauskiene K, Isaksson M. Allergic contact dermatitis from formaldehyde mimicking impetigo and initiating rosacea. Contact Dermatitis. 2018;78(5): 359-361. 4. Darrigade AS, Dendooven E, Aerts O. Contact allergy to fragrances and formaldehyde contributing to papulopustular rosacea. Contact Dermatitis. 2019;81(5):395-397. 5. Warshaw EM, Baker DR. Positive patch test reactions to retapamulin ointment in two patients. Dermatitis. 2009;20(4):220-221.