Table 1.

Relation of Head Zones with dermatomes in torso and head and neck areas, according to description of clinical cases for each zone. Dermatome varies according to disease aggravation (in bold).

Head zone	Related dermatome	Areas on face and neck
Heart (H) and lung (L) (1)	H: D1–D3, D4–D9  and cervical L: D1–D5, D6-D7	Frontonasal Frontotemporal Midorbital
Stomach	D6–D9	Frontonasal Frontotemporal Temporal Parietal vertical
Liver (LV) and gallbladder (G)	L: D7–D10 Right side GB: D7–D9. D6	Frontonasal Vertical occipital (very common in neck and shoulder pain)
Bowel	(a) Until rectum: D9–D12 (b) Rectum: S2–S4	Vertical Parietal
Kidney and ureter	D10 to L1	No relationship is described
Bladder	(a) Overdistension: D11, D12, L1 (b) Membrane and neck: S1, S2–S4	No relationship is described
Sexual organs (2)	D10–S4, L5. Excluding L2 to L4 by anatomical gap	Occipital (3)

(1) The areas of heart and lung share dermatomes, as well as areas in face, which were unified in this work for practical purposes of analysis. (2) The author shows a different dermatome for each sexual organ: prostate (D10, D11 D12, L5, S1–S3), epididymis and annexes (D11-D12, L1, D11-D12, L1), testis and ovary (D10), cervix and uterus ((a) in contraction: D10–D12, L1, (b) cervical canal and lower portion. S1, S2–S4, L5). They were unified for purposes of analysis. (3) Only described for ovarian and testicular dermatome.