** Thanks for contacting HCM with your health concern 1. This could be contributed to mold related illness [due to production of mycotoxins], mainly allergenic i.e. causing allergic reaction [eye irritation] like rhinitis,sinusitis,asthma and skin problem PS. could be immune mediated response by Immunoglobulin E [IgE] since damp houses are linked with nasal allergies,burning eyes,eye irritation 2. The best way to prevent mold infection is to control the moisture since mold spores will not grow in the absence of moisture and for that: i. leakage in plumbing or any other structure leading to moisture build up should be repaired ii. use of air conditioner or air humidifier is essential iii. maintain good ventilation iv. providing insulation to prevent condensation on cold surfaces like pipes, windows,floor can be helpful 3. when all the necessary steps has been taken, thereafter required testing and sampling may be carried out by professionals to determine that adequate cleaning has occured