Development of Seborrheic Keratosis and Human Papillomavirus (HPV) Infection Following Four Months of Fingolimod Treatment in a Patient With Multiple Sclerosis: A Report of a Rare Case

一例罕见病例报告：多发性硬化症患者接受芬戈莫德治疗四个月后出现脂溢性角化病和人乳头瘤病毒（HPV）感染