There's nothing wrong with using the term outsider in that context, I just wanted to check if I was understanding you correctly :)

Yeah ivermectins effect on rosacea is interesting. Its believed that in some cases rosacea may be aggravated or caused by an over abundance of demodex mites (microscopic skin mites that are on everyone's skin), but the exact relationship isnt well understood. So the ivermectin is used for its antiparasitic effect, and also being a topical anti inflammatory is helpful since rosacea is an inflammatory skin condition

The weird part is that if I understand right in clinical trials another antiparasitic was just as effective at killing the demodex mites if not more, but wasnt effective at treating rosacea. Sulfur is also uses to treat rosacea for its similarly antiparasitic and mild antiinflammatory properties. Its really strange to me what sorts of treatments it has- like topical and oral antibiotics- you wouldn't think that would treat it but thats several of the medications approved for treating rosacea

Rosacea is one of those weird conditions thats highly personal and we don't fully understand what's going on with it. It can also manifest with much more variety than people realize, including ocular rosacea, where instead of people getting flushing and redness like you expect (vascular rosacea), you get grittyness and irritation of the eyes. It also comes in phymatous rosacea which can be dysfiguring (which kinda terrifies me a little bit, I don't want to dislike my face), and papular pustular rosacea which looks a little like acne with small red bumps.

Also weird is that the condition progresses and becomes more severe over time. So exposure to your triggers doesnt just mean that your skin doesnt look great for right now, it also means it will continues to get more sensitive and harder to calm down when flaring up