Parameters:
(1) numbness, pain, tingling and/or decreased sensation in the thumb
(2) numbness, pain, tingling and/or decreased sensation in the index finger
(3) numbness, pain, tingling and/or decreased sensation in the middle finger
(4) numbness, pain, tingling and/or decreased sensation in the fourth finger
(5) numbness, pain, tingling and/or decreased sensation in the fifth finger
(6) numbness, pain, tingling and/or decreased sensation in the thenar aspect of the palm
(7) numbness, pain, tingling and/or decreased sensation in the hypothenar aspect of the palm
(8) numbness, pain, tingling and/or decreased sensation over the dorsum of the hand
(9) wrist pain
(10) pain radiating up the ventral arm
Classic Pattern:
(1) symptoms in 2 or all 3 of fingers 1, 2 and 3
(2) with or without:
(2a) symptoms in fingers 4 or 5
(2b) pain in the wrist
(2c) pain radiating up the arm
Probable Pattern:
(1) classic pattern plus symptoms over whole palm or over thenar palm (but not over only the hypothenar palm)
Possible Pattern:
(1) symptoms only in thumb
(2) symptoms only in finger 2
(3) symptoms only in finger 3
Unlikely Pattern:
(1) absence of symptoms in fingers 1, 2 and 3
(2) symptoms in fingers 4 and/or 5 only
(3) symptoms over the dorsum of the hand
(4) symptoms involving the hypothenar palm only
