What do you know about efflorescence from old homes causing medical problems? What toxins, treatment, problems might yoy expect? This is on the WHO as a problem in wet places like London. I am having peripheral nerve symptoms and noone will listen to the fact that this may be the cause as I live in a wet area and am renting a ran down old house with noticeable wall leakages. What should I do? We moved last month but my sy. are getting worse. I am a RN with a MSN. Thank you doctor