In addition, generally a person does not inherit a particular allergy, but only a tendency to have allergies. However, a small number of children have allergies though in no other family member who is allergic. And if a child is allergic to a substance, it is likely it will do is to others. What causes allergies? When your body is overreacting to things that do not cause problems to most people you have one. These things are called allergens. Sometimes used the term hay fever to describe an allergic reaction to allergens in the air. The overreaction to the allergens your body is what causes the symptoms. See the list of symptoms in the table below. What are the most common allergens? Pollen from trees, grasses and weeds. Those that occur in the spring (late April and May) are often due to tree pollen. Allergies that occur in the summer (late May to mid July) are often caused by grass pollen. Allergies that occur in the fall (late August until the first frost) are usually caused by a ragweed. Moho. Mold is common where water tends to collect, such as shower curtains in the window frames and basements wet. Can also be found on the trunks of decaying wood, hay, mulches, commercial peat moss, compost piles and leaf litter. This allergy is usually worse during humid and rainy. Animal dander. Both pieces of skin and hair of animals are allergens. You may be exposed to dander when handling an animal or from house dust that contains dander. Powder. Many allergens, including dust mites are present in the dust. Dust mites are tiny creatures found in bedding, mattresses, carpets and upholstered furniture. These creatures feed on dead cells and other things found in house dust. How I can avoid allergens? Pollens. Take a bath or shower before bed to remove pollen and other allergens in your hair and skin. Avoid going outside, especially on dry days, windy. Keep windows and doors shut, just use an air conditioner at home and in your car. Moho. You can decrease the amount of mold in your home by removing houseplants and by frequently cleaning shower curtains, windows, bathrooms, damp walls, areas with rotting wood that is dry and trash cans inside your home. Use a mixture of water and bleach (sodium hypochlorite) to kill mold. Not carpet bathrooms or other damp rooms and use mold-proof paint instead of decorative paper for walls. Reducing the humidity in your home to 50% or less can also help. Animal dander. If your allergies are severe, you may need to get rid of their pets or at least keep them outside the house. Cat dander or dog is often present in house dust and it takes four or more weeks to go away, therefore, an experiment to take your pet outside of your home for a short time may not help. How are allergies? Specific treatment for allergies will be determined by your physician based on: your age and overall medical history. That extent of the allergic. Its specific tolerance. Expectations for the course of the allergic. Your opinion or preference. The three most effective ways to deal with are avoidance, immunotherapy and medication. That fight drug allergies For more information visit All information we provide is general in nature, remember that this information alone can not replace the health care or human services you may need. Only provide a service and reference information, please consult your health care professional who treats you about any concerns you have about your own health.