Genital Skin Ulcers - Differential Diagnosis Algorithm Painful: • Herpes simplex • Haemophilus ducreyi (chancroid) • Behcet's syndrome • Pemphigus vulgaris • Lichen sclerosis • Erosive lichen planus Painless: • Primary syphilis (chancre) • Granuloma inguinale • Lymphogranuloma venereum #painless #genitals #Ulcers #ulcerative #skinrash #dermatology #Differential #Diagnosis #Algorithm #causes
