Distribution of Cutaneous Nerves Across a Female Body

Description

Posteriorly, the figure is presented as a half-and-half plate: the right side retains normal surface anatomy from the occiput and nuchal region to the calcanei, while the left side overlays color fields corresponding to dorsal dermatomes. Cervical territories span the posterior scalp and neck, then sweep laterally across the shoulder cap and posterior arm, with thoracic bands running inferiorly across the scapular region and back toward the midline over the spinous processes. Inferior to the waistline, lumbosacral segments map over the gluteal region and posterior thigh, continuing distally along the calf to the heel and lateral border of the foot. Midline boundaries are crisp. Segmental transitions are emphasized. Dermatomal mapping on the back matters when you are localizing a lesion to a spinal nerve root, dorsal root ganglion, or peripheral cutaneous branch. Herpes zoster commonly respects a single dermatome and does not cross the posterior midline, while radiculopathy from cervical or lumbar disc disease often produces pain and paresthesia that follow these segmental skin territories more reliably than muscle weakness does. The posterior view also helps clarify why scapular and paraspinal complaints can represent thoracic root irritation, and it supports bedside sensory testing in suspected spinal cord syndromes where a clear sensory level on the trunk guides imaging and management. Small map, big diagnostic return. Neurology and dermatology teaching sessions use this plate to reinforce segmental sensory examination and to contrast dermatomes with named cutaneous nerves during surface anatomy labs. It also fits well in patient-facing educational materials for shingles distribution, in spine clinic documentation to communicate a suspected root level (for example, C7 versus C8 or L5 versus S1), and in exam prep resources that test posterior trunk and lower-limb sensory territories. Anatomical accuracy verified by SciePro's Medical Advisory Board.