Long ago the hands were discovered as a diagnostic tool, and therefore it is not surprizing that many great philosophers have described the significance of hands! Today hands can be used as a diagnostic instrument in order to recognize various medical & psychiatric disorders, such as: schizophrenia, diabetes mellitus, psoriasis, rheumatoid arthritis, Marfan syndrome, fragile-x syndrome & Down syndrome. How come?

A few quotes from respected philosophers describing the philosophical importance of hands:

Aristotle (384BC - 322BC)

Aristotle, the Greek philosopher said about the hand:

“… (the hand) is the organ of the organs, the active agent of the passive powers”

Sir Charles Bell (1774-1842).

Sir Charles Bell, the Scottish surgeon said:

“The hand is essentially the organ of the mind, the medium of its expression, and the Instrument whereby its promptings are carried into execution”

Carl Gustav Jung (1875-1961).

Carl Gust Jung, the Swiss psychiatrist said:

“Chirology [hand reading] is an art which dates back to very ancient times. The ancient physician never hesitated to make use of such
auxiliary systems as chiromancy and astrology for diagnostic and prognostic purposes as is shown, for instance, by the book of Dr. Goclenius who lived at the end of the sixteenth century. … The totality-conception of modern biology which is based on the evidence of a host of observations and research does not exclude the possibility that hands, whose shape and functioning are so intimately connected with the psyche, might provide revealing and therefore, interpretable expressions of psychical peculiarity, that is, of the human character. …”

Today, the hand can be used to study the significance of hand signs in the perspective of quite a few syndromes, diseases, and psychiatric disorders. You can check out many more details about dozens of hand signs via the sources below:

34 Hand signs in Diabetes Mellitus (type 1 & 2)

29 Hand signs in Down syndrome (trisomy 21)

30 Hands signs in Fragile-X syndrome

5 Hand signs in Marfan syndrome

24 Hand signs in Psoriasis

28 Hand signs in Rheumatoid Arthritis

37 Hand signs in Schizophrenia 

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Psoriasis is a common skin condition that causes skin redness and irritation. Most persons with psoriasis have thick, red skin with flaky, silver-white patches called scales. The diseases is seen in about 1% to 3% of the world population.

The hand in psoriasis shows many more stricking features that relate to the disease. Especially the fingernails display often typical characteristics, including e.g. nail pitting, onycholysis, oil drop signs & nail dystrophy – which are all featured in the video above presented by Dr. James L. Campbell Jr., MD.

But there are many other hand & nail characteristics involved in psoriasis. The following article present an overview of 24 hand markers in psoriasis:

HANDS & PSORIASIS: 24 hand markers


A classic example of the hand in psoriasis vulgaris:

 In 1988 a very unusual hand therapy became available at various Spa centers in the world, named: ‘Doctor fish’. Doctor fish are a species called Garra Rufa (and Cyprinion Macrostomus) – which originate in pools near two small Turkish towns, Kangal and Sivas. In non-medical contexts, Garra rufa is called the reddish log sucker. They have long been known for their ability to treat the symptoms of skin conditions, especially: psoriasis!

“Doctor fish” – so named for their ability to produce healthy, glowing results from even the most crusty or diseased epidermis – are the key ingredient in a spa and skin treatment becoming increasingly popular across Turkey, Japan, China, Europe and the US.

The idea is that you immerse your hands, feet, or, if you are brave enough, your entire body in a warm pool that swarms with hundreds of hungry minnow-sized feeders. The fish zoom in on your most crusty, flaky or scabby skin and chomp away at it to reveal the fresh layer beneath. According to the spas and their enthusiasts, you emerge refreshed, healthy, buffed and glowing.

SUGGESTION FOR FURTHER READING:
Let’s shake hands with the hand fish!
Into the hands of ‘Paul the Octopus’!
The mystery of the five fingers!
Five things that your 5 fingers can tell you!
The difference between the human hand & the hands of primates!

Evolution: from fish to human!