Polish plait

Polish plait (Plica polonica in Latin), plica, or trichoma is a formation of hair. This term refers to hairstyle, or a medical condition. It also relates to the system of beliefs in European folklore, and healing practices in traditional medicine in Poland.
As a medical condition
Plica Polonica, syn. plica neuropathica, (common name Polish plait) is an uncommon condition in which hair shaft becomes entangled irreversibly, forming a mass which is matted and sometimes can be sticky and moist.
In this condition the protective layer of the hair (cuticle) is damaged, and the cortex of the hair is exposed. Cortex is a more moist and sticky part of the hair than the outer layer, and the affected hairs adhere to each other and unaffected hairs. Several factors may contribute to this condition: chemical exposure, hair with natural kinks, hair extensions, quality of water and shampoo, or poor hair grooming and hair care techniques. It may also be caused...