Expose
Press your fingers in someone's skin to expose what's underneath. This is pretty gross, but sometimes it's more important that you expose the cause of the problem, than avoiding something uncomfortable.
Close your eyes. Picture someone's arm. Now touch their skin with your fingers and peel it back to expose the muscles and bones underneath.
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You expose a small hole under their skin and heat (ひ) comes pouring out. Aha! You knew there was something wrong under here. Apparently there's something under this person's skin that's exuding way too much heat.
Imagine the heat steaming out, like it's coming out of a teapot, not out of somebody's arm skin.