Common Disorders of the Immune System
Immune system disorders arise when the body’s defense mechanism fails to function properly. These disorders fall into three main categories: autoimmune diseases, immunodeficiency disorders, and hypersensitivities. Autoimmune diseases like rheumatoid arthritis and lupus occur when the immune system mistakenly attacks the body's own cells. Immunodeficiency disorders, such as HIV/AIDS, result in a weakened immune response, making the body susceptible to infections. Hypersensitivities, including allergies, involve an overreaction to harmless substances like pollen or pet dander. Understanding these disorders can help in early diagnosis and effective management.