Final answer:
Plaquenil (hydroxychloroquine) is believed to interfere with processes of antigen processing and activation of autoimmunity. It is used as an anti-inflammatory medication to treat inflammation in patients with diseases like rheumatoid arthritis and systemic lupus erythematosus (SLE). Patients using this medication should limit their exposure to sunlight.
Step-by-step explanation:
The mechanism of action of Plaquenil (hydroxychloroquine) is not completely understood, but it is believed to interfere with processes of antigen processing and activation of autoimmunity. This drug is an anti-inflammatory medication used to treat inflammation in patients with diseases like rheumatoid arthritis, childhood arthritis, and systemic lupus erythematosus (SLE). Hydroxychloroquine is also known to have photosensitivity effects, so patients are advised to limit their exposure to sunlight.