Medical Terminology for Blister Drainage
The medical term for puncturing a blister with a needle to promote drainage is "piercing" or "decompression" of the blister, with the blister roof left in situ.
Standard Medical Terminology
According to the British Association of Dermatologists' guidelines, the formal procedure is described as:
- Blister piercing or blister decompression 1
- The complete procedure may be referred to as "aspiration" when using a needle to withdraw fluid, though the guidelines note that piercing causes less discomfort than aspiration 1
Key Distinction from Other Terms
Important caveat: This is distinct from:
- "Deroofing" - which means removing the entire blister roof (NOT recommended in most cases)
- "Aspiration" - technically refers to withdrawing fluid with a syringe, which causes more patient discomfort 1
Proper Technique Description
The British Association of Dermatologists uses the term "pierce" in their formal guidelines, describing the procedure as: "Pierce blister at base with a sterile needle, with the bevel facing up. Select a site in which the fluid will drain out by gravity to discourage refilling" 1.
The blister roof is explicitly left in place to act as a biological dressing - this is a critical component of the procedure 1.
In clinical documentation, you would write: "Blister pierced and decompressed with sterile needle, roof left intact" or simply "blister decompression performed."