If you have thyroid disease and you’re losing hair, one of the biggest mistakes is assuming all thyroid hair loss is the same. It isn’t. That matters because thyroid hair loss can show up in at least three very different ways, and each one has a different cause, a different pattern, and a different solution. If you treat the wrong type with the wrong strategy, it’s easy to spend months frustrated while the shedding, thinning, or patchiness keeps getting worse.