SI3 Hou Xi (后溪) Dog Acupuncture Point
In dogs, SI3 (Hou Xi, 后溪) is a point on the Small Intestine meridian. It is located proximal to 5th MCP joint on ulnar side. Traditional indications in this chart include stiff neck, deafness, epilepsy.
Prepared by the PetAcu Team · Last updated October 7, 2026
This page is educational. It describes a point in dogs as listed in traditional charts and does not give treatment advice. Points should be needled only by trained veterinary professionals. See our Medical Disclaimer.
Quick facts
- Species
- Dog
- Point code
- SI3
- Pinyin
- Hou Xi
- Chinese name
- 后溪
- Meridian
- Small Intestine
- Element or system
- Fire (Sovereign)
- Point category and notes
- Shu-Stream; Confluent of Du vessel
Where is SI3 Hou Xi on a dog?
Proximal to 5th MCP joint on ulnar side.
Point locations are approximate and vary with breed and body size. A trained practitioner finds the point by feeling anatomical landmarks.
Traditional indications
- Stiff neck
- deafness
- epilepsy
Indications are taken from traditional veterinary acupuncture charts. They describe how the point has been used and are not proof that it treats these conditions in dogs.
Dog conditions that mention SI3 Hou Xi
PetAcu dog condition guides that name this point:
Points often discussed alongside SI3 Hou Xi
These points appear in the same dog condition guides. A practitioner chooses a combination for each dog.
Safety notes
Needling should only be done by a trained veterinary professional. Needle depth, angle and technique depend on the point, the size of the dog and its condition.
Some owners are shown gentle acupressure by their veterinarian. Do not press on a painful area, and stop if your dog shows pain, guarding or anxiety. If your dog suddenly cannot walk or is in severe pain, see a veterinarian immediately.
Questions about SI3 Hou Xi
Where is SI3 Hou Xi on a dog?
Proximal to 5th MCP joint on ulnar side. Locations are approximate and are found by palpation by a trained practitioner.
What is SI3 Hou Xi used for in veterinary acupuncture?
The source chart lists stiff neck, deafness, epilepsy as traditional indications. This is traditional use and not proof of effect.
Can I use SI3 Hou Xi at home?
Needling should only be done by a trained veterinary professional. Gentle acupressure is sometimes shown by veterinarians, so ask yours first, especially if your dog is in pain, has a spinal problem or has not been examined.
Learn more and next steps
Printable point cards and atlas
Acupuncture books, printable point cards, courses and learning resources.
See books and learning →Find a veterinary acupuncturist
Browse clinics and mobile vets by country, state and city.
Search the directory →Dog acupuncture conditions
Guides to common dog conditions and the points commonly discussed for them.
Browse conditions →Some resources are our own digital products, sold on Gumroad. Links to products from other makers may be affiliate links and are labelled. See our Affiliate and Product Disclosure.
Other Small Intestine points with guides
Species: dog. Point data compiled by PetAcu from the Canine Acupuncture Points reference charts. Back to the dog acupuncture points chart or the veterinary acupuncture points atlas.