๐ ็ธฝ็ฎ้ ๏ฝ ๐ ่ฑๆๅๆ๏ผๆฌ็ฏ๏ผ ๏ฝ ๐ ๅฎๆด็ฟป่ญฏ ๏ฝ โญ ็ฒพ่ฏ็ญ่จ
Bubble hair
Bubble hair
Described by Brown etโฏal. in 1986, bubble hair refers to an acquired hair shaft abnormality, primarily in young females, characterized by bubbles within the hair shaft, particularly the medullary region.1,2
Bubble hair develops as a result of heat-induced gas accumulation within the hair shaft. The condition is often due to the use of hair dryers or of any other instrument that heats the hair.3โ5 It can also be associated with environmental factors such as swimming in chlorinated pools and exposure to the sun and wind. The bubbles are formed by rapid evaporation of the water within the hair shaft. It is unclear whether the bubble itself is enough to break the hair or if concomitant weathering is also required. Examination under light microscopy reveals vacuolization within the hair shafts. The vacuoles vary in size and appear to distend the shafts. Electron microscopy reveals loss of cortical cells and medulla, with large cavities in some areas and reticulated โSwiss cheeselikeโ loss of cells in others.6