Uveitis and ocular inflammation may arise from various factors, including autoimmune diseases such as rheumatoid arthritis, ankylosing spondylitis, and systemic lupus erythematosus. Infections, particularly those caused by viruses (like herpes simplex and cytomegalovirus), bacteria (such as tuberculosis), or fungi, can also trigger these conditions. Other potential causes include trauma to the eye, exposure to toxic substances, and certain medications, as well as idiopathic sources where the exact cause remains unknown.