IMMUNE SYSTEM DISORDERS
Disorders of the Immune System fall generally in three categories:
• Overactive or inappropriate immune response.
• Deficient immune response.
• Autoimmune (self-attacking) response.
Asthma and allergies are examples of an overactive immune system reacting to a non-threatening foreign substance.
Immune deficiencies (immunodeficiencies) and autoimmune disorders are generally more serious and can be life-altering.