Yes, it kills parasites all over the body. Every organism has a certain frequency that will kill it. The only place it can't reach is the internal organs. Which is why the second part is to use Wormwood /black walnut/cloves to go after those ones. Vitamin Shoppe sells a good combination of these in liquid form without alcohol. I'm getting myself some more soon.
The rash is probably related to the inconvenience placed on the crud by the lauric acid in the VCO. The only advice I might give would be to discontinue until after your presentation. It might settle down a bit.
I have not had good success with VCO moisturizing the skin. A good lotion like 'Burts Bees' will probably serve you better. Florasone if you can find it. In my experience the moisture will return when the dietary issues are straightened out.
Keep your head up. There are alot of things that need to be done and it helps to focus on those and not dwell on this stuff. Peace