Types of baldness due to disease include pityriasic baldness and syphilitic baldness, while chronic diseases such as diabetes, systemic lupus erythematosus or colitis can also lead to drastic hair loss.
因病引起的禿頭有「糠疹性禿」、「梅毒性禿」等，糖尿病、全身性紅斑性狼瘡、結腸炎等慢性病，也有可能導致髮絲紛紛墜落。