| pubmed-article:754608 | pubmed:abstractText | The study of congenital hair defects can be made with many methods among which the examination of the hair shaft under polarized light is the most interesting. This scientific, precise and complete method bring the third dimension, allows one to see the slightest structural abnormalities of hair, to make a revision of the classical nomenclature, and should become the routine method for hair examination. We present the principles, the technique and the results. | lld:pubmed |
