Urticaria, also known as hives, is an outbreak of swollen, pale red bumps on the skin that appear suddenly. Hives usually cause itching, burning stinging sensation. They can be dry, moist, bumpy, smooth, cracked, or blistered. Symptoms include itching, redness, hyperpigmentation. Itching is an irritating sensation to scratch skin frequently. Sometimes it is painful too. Symptoms include skin redness, stinging sensation There are various symptoms depending on severity of allergy and allergen. These include sneezing,runny nose, itchy, red, watering eyes, wheezing, chest tightness, shortness of breath and a cough, abdominal pain, feeling sick, vomiting or diarrhoea.