NAILS IN HEALTH AND DISEASE.
Introduction:
The nails are present at the top of every finger tip on the dorsal surface.The main function of nail is protection and it also helps for a firm grip for holding articles.It consists of a sturdy relatively flexible keratinous nail plate originating from the nail matrix. Beneath the nail plate there’s a soft tissue called nail bed.Between the skin and nail plate there’s a nail fold or cuticle.Traditional healthy nail is slight pink in color and the surface is convex from facet to side.Finger nails grow one cm in 3 months and toe nails take 24 months for the same.
Importance of nails in disease diagnosis:
The color ,appearance,form and nature of the nails provide some information about the overall health and hygiene of someone . Nails are examined as a routine by all doctors to get some clues regarding underlying diseases.Just trying at nails we tend to will makeout the hygiene of a person.The abnormal nail may be congenital or due to some diseases.The cause for changes within the nail extend from straightforward reasons to life threatening diseases.Hence the examination by a doctor is crucial for diagnosis .Some abnormal findings with probable causes are mentioned here for general awareness.
one) Hygiene:-
We tend to will make out an unhygienic nail very simply .Deposition of dirt under the distal finish of nail plate will build a chance for ingestion of pathogens while eating.If neaten isn’t done properly it can lead to worm troubles in children.When the worms crawl in the anal orifice children will scratch that lodges the ova of worms below the nails and can be taken in while eating.Prominent nail will conjointly complicate a skin disease by habitual scratching.Sharp nails in tiny children cause little wounds after they do feet kicking or hand waving.
2) Color of the nails:-
a) Nails become pale in anaemia.
b) Opaque white discolouration(leuconychia) is seen in chronic renal failure and nephrotic syndrome.
c) Whitening is additionally seen in hypoalbuminaemia as in cirrhosis and kidney disorders.
d) Drugs like sulpha group,anti malarial and antibiotics ect can produce discolouration within the nails.
e) Fungal infection causes black discolouration.
f) In pseudomonas infection nails become black or green.
g) Nail bed infarction occures in vasculitis especially in SLE and polyarteritis.
h) Red dots are seen in nails because of splinter haemorrhages in subacute bacterial endo carditis, rheumatoid arthritis, trauma, collagen vascular diseases.
i) Blunt injury produces haemorrhage and causes blue/black discolouration.
j) Nails become brown in kidney diseases and in decreased adrenal activity.
k) In wilsons disease blue colour in semicircle appears in the nail.
l) When the blood provide decreases nail become yellow .In jaundice and psoriasis also nail become yellowish.
m) In yellow nail syndrome all nails become yellowish with pleural effusion.
3) Shape of nails:-
a) Clubbing: Here tissues at the bottom of nails are thickened and therefore the angle between the nail base and therefore the skin is obliterated. The nail becomes a lot of convex and also the finger tip becomes bulbous and appearance like an finish of a drumstick. When the condition becomes worse the nail appearance like a parrot beak.
Causes of clubbing:-
Congenital Injuries
Severe chronic cyanosis
Lung diseases like empyema,bronchiactesis,carcinoma of bronchus and pulmonary tuberculosis.
Abdominal diseases like crohn’s disease,polyposis of colon,ulcerative colitis,liver cirrhosis ect…
Heart diseases like fallot’s tetralogy,subacute bacterial endocarditis and ect..
b) Koilonychia:-
Here the nails become concave like a spoon.This condition is seen in iron deficiency anaemia.In this condition the nails become skinny,soft and brittle.The normal convexity will get replaced by concavity.
c) Longitudinal ridging is seen in raynaud’s disease.
d) Cuticle becomes ragged in dermatomyositis.
e) Nail fold telangiectasia may be a sign on dermatomyositis ,systemic sclerosis and SLE.
4) Structure and consistancy:-
a) Fungal infection of nail causes discolouration,deformity,hypertrophy and abnormal brittleness.
b) Thimble pitting of nail is charecteristic of psoriasis ,acute eczema and alopecia aereata.
c) The inflamation of cuticle or nail fold is called paronychia.
d) Onycholysis is that the seperation of nail bed seen in psoriasis,infection and once taking tetracyclines.
e) Destruction of nail is seen in lichen planus,epidermolysis bullosa.
f) Missing nail is seen in nail patella syndrome.It is a hereditary disease.
g) Nails become brittle in raynauds disease and gangrene.
h) Falling of nail is seen in fungal infection,psoriasis and thyroid diseases.
five) Growth:-
Reduction in blood offer affects the growth of nails. Nail growth is additionally affected in severe ilness. when the disease disappears the expansion starts again ensuing in formation of transverse ridges.These lines are referred to as Beau’s lines and are healpful to date the onset of illness.
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