From natural causes was uncommon (2 Kings 2:23; Isa. 3:24). It was included apparently under "scab" and "scurf," which disqualified for the priesthood (Lev. 21:20). The Egyptians were rarely subject to it. This probably arose from their custom of constantly shaving the head, only allowing the hair to grow as a sign of mourning. With the Jews artificial baldness was a sign of mourning (Isa. 22:12; Jer. 7:29; 16:6); it also marked the conclusion of a Nazarite's vow (Acts 18:18; 21:24; Num. 6:9). It is often alluded to (Micah 1:16; Amos 8:10; Jer. 47:5). The Jews were forbidden to follow the customs of surrounding nations in making themselves bald (Deut. 14:1).