Dr Edgar specialises in the diagnosis and management of complex immune deficiency, allergic or autoimmune disorders.

He has specialist interests in the diagnosis of primary immune deficiencies (PID) in which the immune system is unable to function properly and affected people develop recurrent or severe infections. There are very many different PID which can present from early childhood right through adult life. A range of treatments are available.

Dr Edgar also specialises in complex allergic disorders including potentially life threatening food, drug and insect venom allergy as well as other causes of severe allergic reactions (anaphylaxis).

Autoimmune disorders occur when the immune system mistakenly reacts against the body's own tissues causing damage. This can cause a wide range of autoimmune diseases which require specialist diagnosis and treatment.