Temporary hair loss after injection of hyaluronic acid filler

Background
Compromised blood flow after filler injection is generally thought to result from intra-arterial obstruction.

Aims
To test this hypothesis.

Patient
A case presented with the clinical picture of reduced arterial blood flow after hyaluronic acid filler injection in the temporal region and subsequent hair loss.

Method
Clinical and ultrasound (US) assessments as well as ultrasound guided hyaluronidase injection were performed.

Result
Blood flow was restored and hair loss proved to be temporary.

Conclusion
There are many arguments to conclude that the problem did not result from intra-arterial occlusion, but rather from outside compression of the artery.