Slight discolorations on the walls and ceiling may go unnoticed for a long time as they gradually spread and get more severe. Even if they are noticed, they often are ignored because it is thought that some discoloration will occur as a part of normal wear and tear in a home. Molds spread throughout the living space leading to serious health consequences. Symptoms caused by mold allergy are watery, itchy eyes, a chronic cough, headaches or migraines, difficulty breathing, rashes, tiredness, sinus problems, nasal blockage and frequent sneezing.