Beau’s Lines

Below you will find more information about Beau’s Lines from Medigest. If you believe that you are suffering from any of the symptoms of Beau’s Lines it is important that you obtain an accurate diagnosis from a medical professional to ensure that you obtain the correct medication or treatment for your condition. There are medical conditions that carry similar symptoms associated with Beau’s Lines and therefore the information provided by Medigest is offered as a guideline only and should never be used in preference to seeking professional medical advice. The information relating to Beau’s Lines comes from a third party source and Medigest will not be held liable for any inaccuracies relating to the information shown.


Grooves across the fingernails or transverse lines are called Beau's lines. These nail abnormalities refer to shape, texture, abnormal color or thickness of the toenails or fingernails. With normal nail growth, the lines progress distally and eventually disappear at the free edge.


Blood tests, x-rays or examination of parts of the nail in the laboratory are among the diagnostic tests depending on what other symptoms exist.


Some tips for the treatment of Beau's lines include trimming of brittle nails after a bath or moisturize it, applying a moisturizer on nails each time you wash your hands, moisturizing cuticles and nails at bedtime and cover them with cotton gloves, avoiding removers with acetone, which dries nails and not using nail polish remover more than twice a month.

Symptoms and Signs

Occurring along the toenails and fingernails are Beau's lines. Spanning its entire breadth, the grooves extend across the nail plate. Determining how much time has elapsed since the line was formed, it is possible to measure the distance from the area where the cuticle is seen and where the nail originates (the proximal nail fold) to the leading edge of the Beau's line.


The possible causes of Beau's lines are from injuries such as chronic picking or rubbing of the skin behind the nail which can cause a washboard nail and crushing the base of the nail or the nail bed which may cause a permanent deformity. Another cause is from infections such as fungus or yeast which cause changes in the color, shape and the texture of the nails. Diseases such as disorders that affect the amount of oxygen in the blood can cause clubbing and poisons such as arsenic-poisoning may cause white line and horizontal ridges.

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