![]() Beau's lines can also be seen one to two months after the onset of fever in children with Kawasaki disease. They may be a sign of systemic disease, or may also be caused by an illness of the body, as well as drugs used in chemotherapy, or malnutrition. Some other reasons for these lines include trauma, coronary occlusion, hypocalcaemia, and skin disease. This may be caused by an infection or problem in the nail fold, where the nail begins to form, or it may be caused by an injury to that area. It is believed that there is a temporary cessation of cell division in the nail matrix. There are several causes of Beau's lines. When it reaches this point the fingertips can become sore for a few days due to the nail bed being exposed by the mis-shapen nail. Beau's lines should also be distinguished from Mees' lines of the fingernails, which are areas of discoloration in the nail plate.Īs the nail grows out, the ridge in the nail can be seen to move upwards until it reaches the fingertip. While Beau's lines are actual ridges and indentations in the nail plate, Muehrcke lines are areas of hypopigmentation without palpable ridges they affect the underlying nail bed, and not the nail itself. īeau's lines should also be distinguished from Muehrcke's lines of the fingernails. These vertical lines are usually a natural consequence of aging and are harmless. Beau's lines are horizontal, going across the nailline, and should not be confused with vertical ridges going from the bottom ( cuticle) of the nail out to the fingertip. ![]()
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