二间
LI2 Acupuncture Point

Erjian

Second Interval

Large Intestine Channel
Location

On the index finger, just in front of the second knuckle, on the radial side.

Traditional functions

Used for toothache and nosebleed in traditional protocols.

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This entry is a plain-language reference, not a guide to self-treatment. Acupuncture point locations require hands-on training to identify and use safely — please see a licensed acupuncturist for treatment.