Approximately 80% of individuals with androgenetic alopecia exhibit very tight scalps, suggesting chronic contraction of the surrounding muscles.

“now the muscles that surround the scalp perimeter that are chronically contracted they're all anchored to this dense fibrous fascial-like membrane that stretches across the top of our scalp like a drum called the galea aponeurotica and this tissue resides directly below the hair follicles and what's interesting is that when you look at the muscle contractions of these things around the scalp perimeter it pulls the galaia taut like a drum and that creates tension”