Metformin Potential in Predisposing Arthralgia, Type II Cross Reactivity Secondary to Group A Streptococcus Infection and Other Comorbidities in Treating PCOS

The document discussed the treatment of Polycystic Ovarian Syndrome (PCOS) in adolescents using metformin, an oral antidiabetic drug, and hormone replacement therapy. While metformin was effective in treating PCOS, its off-label use was controversial due to potential side effects, including back pain, swollen joints, and rare behavioral changes. The document presented a case of a female with PCOS who, after more than two years of metformin treatment, experienced hyperuricemia, migraines, neurological pain, severe joint pain, and rheumatic fever. Treatment for rheumatic fever with benzathine benzyl penicillin led to a Type IV delayed hypersensitivity reaction, highlighting the complexities and risks associated with treating PCOS with metformin and subsequent treatments.