Clubbing in the fingers of a 33-year old female with pulmonary hypertension.
Clubbing in the fingers of a 33-year old female with pulmonary hypertension.

Nail clubbing is found in 29% of lung cancer patients!

‘Fingernail clubbing’ is one of most well-know indicators for recognizing cancer in the hand. A.k.a. ‘Hippocratic nail’ this nail characteristic been known since the early days of the Greek philosopher Hippocrates, who recognized nail clubbing as a classic sign of disease.

Today ‘nail clubbing’ is associated various lung diseases, especially lung cancer with non–small cell lung carcinoma. Nail clubbing is also linked with heart problems and gastrointestinal problems – but these are less common than lung problems.

Statistics on nail clubbing & lung cancer:

“Nail clubbing has been reported in 29% of patients with lung cancer and is observed more commonly in patients with non–small cell lung carcinoma (35%) than in patients with small cell lung carcinoma (4%).”

How to recognize ‘clubbing fingernails’?

Clubbing is usually a painless but complex fingernail disorder which often goes unnoticed of it’s presence in the hands of patients!

In individuals without clubbing, if two opposing fingers are placed together, a diamond-shaped window will appear. In clubbing, this window is obliterated and the distal angle formed by the two nails becomes wider. This is known as Schamroth sign window test.

Schamroth's windows test is used in the diagnosis of nail clubbing.

NOTICE: Cases of ‘brachydactyly’ should NOT be associated with the medical problems related to ‘nail clubbing’; the ‘clubbed thumb’ is likely the most well-known variant of ‘brachydactyly’ – which is e.g. seen in the hands of the american actress Megan Fox

Actress Megan Fox has a ‘clubbed thumb’ – which should not be confused with ‘nail clubbing’.
American actress Megan Fox has a 'clubbed thumb' - which should NOT be associated with 'nail clubbing'.

SUGGESTION FOR FURTHER READING:

Nail clubbing: developments, treatment & prevention!
Hands on lung cancer: the clubbing fingernail!
Fingernail disorders & medical hand analysis!
Overview of more common nail disorders!
Megan Fox has a ‘clubbed thumb’ – not to be confused with ‘fingernail clubbing’!!

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Five things about hands, fingers & digit ratio.

Five things about: hands, fingers & digit ratio.

What your five fingers reveal about: human evolution, sports, social behavior, disease & your sex-life:

In 2008 Professor John Manning at the University of Swansea presented the book “The Finger Book”. The book explains how the ratio of the index finger and ring finger is related to various aspects life. Let’s take a look at his major findings + developments in the ‘finger research’ – including an update from 2009!

WHAT FINGERS REVEAL ABOUT HUMAN EVOLUTION:

The human thumb is known as a ‘marker’ for the evolution of human kind; however our relative long index finger – compared to the ring finger – is a likewise example. In the chimpanzee and gorilla, this hand feature is different: they always have longer ring fingers and a short index finger.

THE LONG RING FINGER & SPORTS:

Exceptional performances in sports are being linked to the amount of male hormones that people absorb before birth while they stay in the womb. The ‘digit ratio’ has frequently been used to predict performances in various sports leagues. In this perspective another interesting research was presented in 2009:

Research from the university of Cambridge points out that financial traders with the lowest ‘2D:4D digit ratios’ have earned 11 times more money than stock traders with a relatively high finger ratio – see the picture below.

Earnings of stock traders at the London Stock Exchange appear to be related to their finger length.

THE LONG INDEX FINGER & SOCIAL BEHAVIOR

Interestingly, especially among children a short index finger may indicate a lack of empathic ability. In general: the longer the index finger, the more people are inclined to learn social behavior and to develop strong empathy for the feelings of others and yourself.

CROSS-CONTAMINATION

There is growing statistical evidence that our finger ratios are a reliable predictor of our receptiveness to diseases. However, in real life the findings have not yet shown to have a significant impact.

YOUR FINGERS & YOUR SEX-LIFE

Men with long ring fingers, consider themselves as attractive. Studies show that women in the general rule agree and confirm the judgements of these men. Surprisingly, a likewise result has been found in women.

The distribution of finger length ratios.

READ THE FULL ARTICLE + MORE:
5 Things about your fingers – about: evolution, sports, social behavior, disease & your sex-life!
How index finger vs. ring finger ratio relates to financial success of London stock traders
News about your hands – wordpress blog
News about finger length & the 2D:4D digit ratio
Hand reading: the international network