Patients with steroid myopathy should not take hydroxychloroquine sulfate tablets. Steroid myopathy refers to muscle lesions caused by corticosteroid hormones, which are usually manifested as symptoms of muscle atrophy, muscle pain, and labored breathing. Hydroxychloroquine Sulfate Tablets is an antimalarial drug that is clinically used as a drug for rheumatoid arthritis, discoid and systemic lupus erythematosus, juvenile chronic arthritis, and skin lesions triggered or exacerbated by sunlight, such as dermatomyositis. It is effective for skin lesions and does not significantly improve muscle symptoms. Steroid myopathies can be induced by hormones, and hydroxychloroquine may also induce myopathies; therefore, hydroxychloroquine sulfate tablets are not recommended for patients with steroid myopathies. Hydroxychloroquine sulfate tablets may cause anorexia, nausea, diarrhea, and cardiac conduction abnormalities in patients. It is contraindicated in patients who are hypersensitive to the product, in patients with pre-existing macular disease of the eye, and in pregnant women. Use with caution in breastfeeding women. Note that an ophthalmologic examination is required prior to administration, and blood glucose levels should be checked during treatment. Patients with steroid myopathy, it is recommended to go to the hospital in time to choose regular treatment and use the drug under the guidance of a doctor.