Hydroxychloroquine is an antimalarial drug that also plays a role in managing autoimmune conditions. It is widely prescribed for malaria prevention and treatment, as well as for chronic illnesses like rheumatoid arthritis and systemic lupus erythematosus, where it helps reduce inflammation and control symptoms. By modulating immune activity, it can ease joint pain, skin rashes, and fatigue associated with these disorders. Additionally, hydroxychloroquine is sometimes used in certain dermatological conditions and off-label for other immune-related diseases. Its versatility lies in both its ability to combat parasitic infections and its immunomodulatory effects, making it valuable in long-term therapeutic care.