1 Eczema is not a single disease but a reaction pattern of the skin produced by a number conditions. 2  Atopic dermatitis, a common causes of eczema, is more prevalent in those with asthma and hay fever. 3  Eczema appears as small blisters that can weep and ooze, or as crusted, thickened plaques of skin.czema facts. 1  Eczema is not a single disease but a reaction pattern of the skin produced by a number conditions. 2  Atopic dermatitis, a common causes of eczema, is more prevalent in those with asthma and hay fever. 3  Eczema appears as small blisters that can weep and ooze, or as crusted, thickened plaques of skin.
Asthma is a disease affecting the airways that carry air to and from your lungs. People who suffer from this chronic condition (long-lasting or recurrent) are said to be asthmatic. The inside walls of an asthmatic's airways are swollen or inflamed.
Your asthma doctor may diagnose adult-onset asthma by: 1  Taking a medical history, asking about symptoms, and listening to you breathe. 2  Performing a lung function test, using a device called a spirometer to measure how much air you can exhale after first taking a deep breath.