Split fingernails, known as onychoschizia or lamellar dystrophy, are caused by frequent wetting and drying of the hands, exposure to cosmetics and chemicals, injury or malnutrition. According to Skinsight, people whose professions require them to wash and dry their hands frequently are at greater risk of developing onychoschizia. When combined with longitudinal splitting of the nail, the condition can be referred to as brittle nail syndrome.Know More
Although split fingernails can be unsightly, Skinsight considers them largely a cosmetic issue. The only oral treatment for split fingernails is a biotin supplement. In order to prevent split fingernails, recommendations include wearing thin gloves when doing housework, avoiding wetting the hands, keeping the nails as dry as possible and applying petroleum jelly in order to increase nail hydration. Hardening agents should be used with caution and applied only to the growing edge of the nail because they cause brittleness.
In some cases, nail splitting can be a symptom of skin diseases such as psoriasis or lichen planus or a side effect of a medication containing vitamin A. Caring.com also warns that brittle nails can result from a lack of moisture being delivered to the nails, signaling the disruption of metabolic functions as a result of thyroid disease.Learn more about Skin Conditions
The main cause of a purple tinge in fingernails is low oxygen levels in the blood. This can be caused by poor circulation, as well as habits that inhibit oxygen absorption such as smoking. A single fingernail may also become purple if it has been injured, indicating a bruise underneath the nail.Full Answer >
Bumpy ridges on the fingernails can be caused by aging, nail injury, lack of moisture or poor nutrition, according to Dr. Phoebe Rich, M.D., clinical adjunct professor of dermatology at Oregon Health Science University. Aging is the most common cause of bumpy fingernails.Full Answer >
Vertical black lines under the fingernails are often the result of a splinter hemorrhage, according to WebMD. Splinter hemorrhages occur when the capillaries of the tips of the fingers bleed between the fingernail and the tissue underneath.Full Answer >
Bedbug rashes appear as itchy red bites with a darker red color in the middle and form in a line or cluster, according to Mayo Clinic. Bedbug bites most often occur on the face, arms, neck and hands. Sometimes bedbug bites are difficult to identify from other insect bites.Full Answer >