Anas [رضي الله عنه] reported that the Prophet [ﷺ] would say:
❝O Allāh, I seek refuge in you from vitiligo [i.e. a skin disease], insanity, leprosy, and the worst of illnesses.❞
[Reported By Abū Dāwūd, (No. 1554) | Al-Nasāʾī, (No. 5493) | Sh. Al-Albānī Authenticated It | Translated By Musa Shaleem Mohammed]