Home     What is causing my asthma?     On-line homoeopathic consultation     Treatments   Prices for tests     Shop     Contact   What causes the symptoms? Specific factors such as pollen, house dust mite, cats and dogs can make the asthma worse for a number of days or weeks. Non-specific triggers such as cigarette smoking, perfumes or paint may make the asthma worse for one hour or so. © Copyrights 2003 - HASS Asthma Clinic. All Rights Reserved.