Allergies are reactions that are usually caused by an overactive immune system. These reactions can occur in a variety of organs in the body, resulting in diseases such as asthma, allergic rhinitis and eczema. Symptoms associated with allergies are red, teary, or itchy eyes: running nose, sneezing, nasal swelling and congestion, itchy ears, wheezing, shortness of breath, eczema (patches of an itchy, red skin rash), etc. Homeopathic remedies such as Arsenicum album, Calcarea carbonica, Calcarea phosphorica, etc are very helpful for allergic patients.