Dr. John B Hagan M.D.

In the not-so-distant past, researchers believed that asthma was a condition that always developed during childhood, and one that merely worsened in later adulthood. That theory has since been proven wrong, as asthma has begun to affect problem-free individuals in their thirties and later adult...

A nickel allergy, or jewelry allergy, is the most common form of contact dermatitis associated with the use of earrings and other jewelry. Nickel is found in many items, including accessories, like necklaces and bangles, coins, zippers, watch straps, hair pins, and frames. This skin allergy affects...

Lupus or systemic lupus erythematosus (SLE) is a chronic autoimmune condition where your immune system sees your own tissues as foreign cells and therefore starts to produce antibodies against them. Since the antibodies are produced by your own cells, these antibodies are given the term...

What is the immune system and how does it work?The immune system is regarded as the natural defense system in your body. The immune system, together with a network of cells and tissues, as well as body organs, protects your body against harmful foreign invaders or substances. Examples of foreign...

The film Peter Rabbit is a modern take on the classic children's story. But, this film isn't without controversy. Parents of children with food allergies, and even parents of children with celiac disease, have recently decided to boycott the film altogether.But, why?It started when snippets from the...

Inhalers are very popular, lifesaving medications for many who are suffering from asthma and other lung conditions. Knowing about the different types of inhalers and how to use them effectively is very important in controlling the conditions. An asthma inhaler is ideal to deliver the medication for...