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Palmomental reflex (palm-chin reflex)

Prevalence in general population (GP): present in a small minority [~0.5% | 1:1 | weight: 1.00]


Most likely diagnostic options for the palmomental reflex - where stimulation of the thenar eminence causes an involuntary contraction of the mentalis muscle of the chin, usually only present in elderly (listed order of conditions below is made according overall statistical chance to find this hand sign combined with the condition):

- ASSOCIATED PSYCHOLOGICAL CONDITIONS:

mood disorders [~15% | 1:10 | weight: 3,0]
schizophrenia [~10% | 1:100 | weight: 0,2]


- ASSOCIATED MEDICAL CONDITIONS:

dementia [~30% | 1:80 | weight: 0.75]
Alzheimer's disease [~28% | 1:100 | weight: 0.56]
trisomy 21 (= Down syndrome) [~50% | 1:700 | w: 0.14]
HIV [~15% | 1:270 | weight: 0.11]


[1st figure = prevalence hand sign in condition | 2nd
figure = prevalence condition in GP | 3rd figure =
estimated weight hand sign for condition relative
to GP (>1,00 = high impact)]



Quick summary:
the palmomental reflex is typically seen in the elderly; high prevalence is especially found in mood disorders, Alzheimer's disease and dementia; occasionally it is also found in healthy elderly.

[For every 100 palmomental reflex cases in the general population (GP) there are 300 mood disorder cases with a palmomental reflex, 75 dementia cases with a palmomental reflex, etc.]


NOTICE: Keep in mind that every single hand sign always bares the potential
to have an association with multiple psychology- and/or health related themes;
a solid assessment always requires a consideration of hand sign combinations!


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