What STD cause sores on genitals and inner thighs that are reddish brown, ozz clear liquid, scab over with a whitish scab, burning while urinating?

See answer. There is no single std that would cause all those symptoms. Chlamydia and gc cause urethritis (burning with urination, discharge, no skin lesions). Scabies and pubic lice could explain skin lesions and usually associated with bothersome itching. Fungal infection of skin another possibility. Would definitely recommend you see md for proper exam, diagnosis, std screening, and treatment.