Allerpet  - Provides allergy information for both the allergy professional and sufferer allergic to dust mites and household pets.

American Lung Association - Website of ALA, health organization fighting lung disease in all its forms, with emphasis on asthma, tobacco control, and environmental health.

House Dust Mite - Website provides information on allergies, rhinitis and asthma in form of animations and tips.

Sinuses - Provides information to sufferers and professionals in sinusitis treatment, complicating factors, and related topics of allergy and asthma.

Buteyko Breathing Clinic - Natural treatment of asthma and other respiratory conditions using Buteyko Breathing Clinic method.

eMedicine: Allergic Rhinitis - Long article with detailed medical information on definition and treatment of Allergic Rhinitis.

Center for Chronic Nasal and Sinus Dysfunction - Provides comprehensive information and resources for those suffering from Sinusitis, sinus problems, and allergies.

Health Centers Online: Nasal & Sinus Center - Provides information about nasal and sinus function, allergy symptoms, allergy treatment and more.

Middle Ear Disease and Allergy - Presents evidence to prove that steady fluid in a child’s middle ear is the outcome of allergy and not infection.

Environmental Protection Agency: Indoor Air Quality - Provides information about indoor air quality, with extensive links to related sites.

Pollen - Provides great deal of information on pollen, and a very useful personalized daily pollen forecast.

Allernet - National Pollen Network provides information for allergy sufferers with pollen forecast, photos, FAQ, and treatment resources.

About: Asthma - Collection of articles about asthma from one of the biggest online guides on all topics.

Asthma Society of Canada - Presents general information and gives guidance on how to live with asthma through learning and proper treatment.

Asthma UK - Independent UK charity provides information, news, services and support for asthma sufferers.