What is mold? Mold is a fungus, extremely common in daily life, the floor (or carpet), basement, bathroom or kitchen floor, walls, air conditioning filters, humidifiers, refrigerators, water containers, not dried clothes bedding, bath towels, curtains, indoor long-shelved food or fruit scraps, indoor pots of soil are easy to breed mold. Mold like moist, warm environment, the optimum temperature of 18-32 ℃, the optimum relative humidity of 65% or more. So the distribution has a certain seasonality and regional. Such as hot summer, over-heated house in winter, hot and humid coastal areas. What are the common allergenic molds and what symptoms do they cause? Common allergenic molds are Streptomyces, Bacillus, Aspergillus, Candida, etc. The process of human being sensitized by mold, including inhalation, ingestion, contact and injection, inhalation is the most important. Fungal spores are very small and light, can be freely dispersed in the air, mold allergy can induce symptoms after inhalation, such as sneezing, runny nose, nasal itching, nasal congestion, chest tightness, cough, and even asthma. A small number of patients also show eye symptoms (itchy eyes, tearing, irritation, etc.), skin symptoms (itchy skin, rash, burning, irritation, etc.) or gastrointestinal symptoms (nausea, vomiting, abdominal pain, diarrhea, hyperactive bowel sounds, etc.). How to control indoor mold? Mold like heat and humidity, so as long as the control of indoor temperature and humidity, mold is not easy to grow naturally. Specific measures are as follows: 1, more open windows in summer, keep indoor and outdoor air circulation, if necessary, you can use dehumidifiers, control humidity at 50% or less, or often use activated carbon to keep your home dry; winter heating to avoid excessive indoor temperature. 2.Avoid the use of carpets and upholstery, if used should be careful to avoid moisture. 3.Clothing should be completely dried out and then put away, and bedding should be turned over regularly; moldy books, newspapers and clothes should be removed in time. 4, indoor and balcony try not to put potted plants, the damp soil may hide a lot of mold. 5, garbage cans should be placed outdoors, clean the garbage in the kitchen and other places in time every day, keep the kitchen dry to avoid the growth of mold. 6, for the bathroom, kitchen and other places that are not easy to keep dry, you can use 60 ° C hot water to clean, inhibit the growth of mold. 7.Wash curtains and bath towels with hot water regularly. 8, the temperature of the water stored in the air conditioning unit is appropriate, it will become a breeding ground for certain bacteria, mold, should be regularly cleaned and replaced air conditioning, air filter screen. 9, regularly defrost the refrigerator, cleaning and keep dry, keep the water under the refrigerator clean and dry. 10, walls, ceilings found on a large mold, you can choose waterproof, mold-resistant good latex paint repaint. Mold allergy patients in addition to do a good job of mold control in the family room, should also try to avoid the following environments: 1, indoor swimming pools, steam baths; 2, greenhouses and more places with dead grass; 3, basements, dark and damp rooms; 4, the old house demolition, rainy season forests, grasslands, etc..