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A laceration of the nail bed causes bleeding into the constricted area underneath the hard nail plate. [1] The blood pools under the nail, giving a reddish, brownish, blueish, or grey/blackish discoloration. The blood puts pressure to the nailbed causing pain which can be throbbing in quality and disappears when the pressure on the nail bed is ...
Onychorrhexis (from the Greek words ὄνυχο- ónycho-, "nail" and ῥῆξις rhexis, "bursting"), is a brittleness with breakage of finger or toenails that may result from hypothyroidism, anemia, anorexia nervosa or bulimia, or after oral retinoid therapy. [1]: 786 It can also be seen in melanoma that involves the nail and onychomycosis. [2]
Onychauxis presents with thickened nails without deformity, and this simple thickening may be the result of trauma, acromegaly, Darier's disease, psoriasis, or pityriasis rubra pilaris, or, in some cases, hereditary. [1]: 783 [2] It may appear as loss of nail palate translucency, discoloration, and subungual hyperkeratosis.
Green nail syndrome is an infection that can develop in individuals whose hands are frequently submerged in water resulting in discolouration of the nails from shades of green to black. [ 3 ] [ 4 ] It may also occur as transverse green stripes that are ascribed to intermittent episodes of infection. [ 3 ]
A black line in your nail can be a sign of melanoma, or it can be a normal part of your nail bed. A woman's story can help you identify the difference. 'Bruise' turned out to be deadly melanoma ...
Clubbing is present in one of five stages: [12] No visible clubbing – Fluctuation (increased ballotability) and softening of the nail bed only. No visible changes of nails. Mild clubbing – Loss of the normal <165° angle (Lovibond angle) between the nailbed and the fold (cuticula). Schamroth's window (see image) is obliterated.
Trauma to the nail can cause the nail plate to be torn from the nail bed. [17] Unlike other types of avulsion, when a nail is lost, it is not typically reattached. Following the loss of the nail, the nail bed forms a germinal layer which hardens as the cells acquire keratin and becomes a new nail. [ 18 ]
Onycholysis is a common medical condition characterized by the painless detachment of the nail from the nail bed, usually starting at the tip and/or sides. [1] On the hands, it occurs particularly on the ring finger but can occur on any of the fingernails. It may also happen to toenails. Onycholysis can occur in many conditions, including ...