Punctum nervosum

Dr Ian Bickle and Dr Craig Hacking et al.

Punctum nervosum, also known as Erb’s point or the nerve point of the neck, is a point half way along the posterior border of the sternocleidomastoid muscle from which all cutaneous branches of the cervical plexus converge and become superficial.

Gross anatomy

The punctum nervosum is located on the posterior border of the sternocleidomastoid muscle approximately midway between the origin of the muscle at the superior aspect of the manubrium and the insertion of the muscle on the lateral aspect of the mastoid process. All four cutaneous branches of the cervical plexus pierce the investing layer of the deep cervical fascia and emerge from the posterior border of the sternocleidomastoid muscle at this point, becoming superficial and fanning out to cover the skin of the neck and head. The four nerves that diverge from Erb's point are:

Related pathology

The punctum nervosum is targeted in a superficial cervical plexus block that provides anaesthesia to the skin of the periauricular regions and anterolateral neck. 

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Article Information

rID: 38066
System: Head & Neck
Section: Anatomy
Tag: anatomy
Synonyms or Alternate Spellings:
  • Erb's point
  • Nerve point of the neck

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Cases and Figures

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    Figure 1: cervical plexus labelled
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