What is digital pitting?

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โˆ™ 2011-08-25 17:26:35

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The digital pitting scar is a common clinical feature in patients with progressive systemic sclerosis (PSS). Its pathogenesis is unclear, but it may result in small ulcerations. The clinical and histological features of these lesions are poorly understood. Eighty-seven patients with PSS were examined at least once per year. Pitting scars were defined as pinhole-sized digital concave depressions with hyperkeratosis. They were seen in 34 cases (39%) and were located not only on the tips of the fingers, but also on the sides, especially on the radial border of the index and middle finger and the ulnar side of the thumb, where they had a linear arrangement. Additional pitting scars were noticed on the dorsal surface of the proximal interphalangeal and metacarpophalangeal joints. Pitting was closely associated with several signs of PSS, e.g. Raynaud's phenomenon, skin thickening or articular involvement (e.g. stiffness, swelling, pain). There was no relationship between the number of pitting scars and the duration of PSS. Biopsy samples were taken of the lesions on the lateral sides of fingers in 3 patients. Histologically, there was a plug-like hyperkeratosis with parakeratosis, homogenized collagen fibers and slight perivascular mononuclear cell infiltration. Calcification and altered collagen fibers were observed in the deep dermis. Although pitting scars of the fingertips may be different from those of the lateral sides of the fingers, both histologically and pathogenetically, they were similar clinically. The scar locations on the fingertips and finger joints (proximal interphalangeal and metacarpophalangeal) suggest that exogenous trauma, vibration injury and/or cold exposure may play a role in their pathogenesis.

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Q: What is digital pitting?
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Related questions

What is the pitting potential give examples of factors which influence the value of the pitting potential?

Pitting potential is the potential where the pitting start and this is noticed when the current is suddenly increased that also mean below this value, now pitting corrosion will initiate Many parameters can effluence the pitting potential such as Temperature, halides ions, surface finishing of the alloy and also state of the electrolyte , is it flowing or stagnant.

What is nonpitting edema?

Non-pitting edema is a type of swelling. Pitting edema occurs when the swollen area is pressed and remains indented. The indentation does not occur with non-pitting edema.

What is pitting oedema?

Pitting edema is a swollen area that will give when pressed and retain a depression for a minute , or so.

What is pitting in engineering?

Pitting is when there are small holes starting to appear in steel often caused by corrosion/rust

What causes destructive gear pitting?

Pitting= Too high surface pressure on gear or lack of lubrication

What is frog pitting?

Frog pitting is a procedure used to kill frogs at ethical standards required by organizations in order to conduct research on animals

What is the main term in pitting edema?


How is pitting corrosion form in pump?

cavitation is the reason

Can pneumonia cause pitting edema in legs?


How do you assess pitting edema?

Pitting edema is edema severe enough to leave a dent when pressed with a finger. Pitting edema is assessed by pushing gently with a finger and evaluating the response. Mild is a one plus, moderate is a two plus, deep is a three plus, and very deep is a four plus.

Which condition is a pitting of the cornea caused by an infection or injury?

Corneal Ulcer.

What rhymes with hitting?

pitting sitting kidding tilting pelting swelting

What causes pitting oedema in the leg?

kidney disease preeclapsia etc

What is the polishing and pitting of rocks by wind blown particles?

This process is called, abrasion.

Why pitting is dangerous?

In a boiler, pitting is dangerous because it weakens the boiler plate by reducing its thickness and strength. A pit that reduces the boiler plate thickness (at its weakest point) to 1/4 of the original thickness will fail at its Maximum Allowable Working Pressure. The weakest point is typically at the longitudinal joint (welded or riveted boilers) and pitting, grooving and cracking at this joint is closely monitored in all boilers.

The small craters in the target of the anode of an x-ray tube are known as what?

Pitting of the anode's focal track is caused by vaporizing of the tungsten disk, a result of the enormous heat produced during normal operation. Pitting reduces the efficiency of the tube.

What are facts about the battle of leyte gulf?

It was the last battle pitting battleships against each other.

What happens to aggregate concrete if the muriatic acid was not completely rinsed off?

pitting and flaking of the surface

Signs and symptoms of acute pulmonary edema?

Dispnea and cyanosis. Pitting edema, elevated IAP

What has the author Gino Palumbo written?

Gino Palumbo has written: 'Pitting corrosion of incoloy 800'

What Oedema is?

Pitting edema is a swollen area that will give when pressed and retain a depression for a minute , or so.

Examples of digital signals and analog signals?

ear plugs-analog keyboard-digital digital pen-digital monitor-digital

Is it normal and usual for pre-64 Winchester 94 to have rust rash or minor pitting in the bore?


How were gases used in the Holocaust?

gases were used by pitting Jews in gas chambers then putting gas in it and killing them

What was one of the reason why the puritans came to the new world?

because of a English king, pitting taxes and pressure on them.