The document discusses different types of allergies including eczema, hives, and hay fever. It describes eczema as a skin rash that can be caused by temperature, humidity, chemicals, infections, stress, clothing, dust, pollen, and animal dander. Hives are described as red bumps on the skin that can be triggered by food, medicine, pollen, sun exposure, cold, and drugs. Hay fever causes symptoms like watery eyes, sneezing, and runny nose when people are exposed to pollen from trees, grass, and weeds.