A few lightning strike victims have been left with Lichtenburg figures on their skin: https://en.wikipedia.org/wiki/Lichtenberg_figure https://en.wikipedia.org

A few lightning strike victims have been left with Lichtenburg figures on their skin: https://en.wikipedia.org/wiki/Lichtenberg_figure https://en.wikipedia.org/wiki/Lichtenberg_figure But this is an extreme symptom of a direct or nearly direct hit. Many lightning victims have no visible injury. Lightning isn't very good at killing people, but it's capable of hurting you from a great distance, because it takes so little current across your heart to cause problems. There is evidence that as little as 5 mA can cause cardiac arrest, and this is the rationale for GFCI protected outlets in homes: https://en.wikipedia.org/wiki/Residual-current_device https://en.wikipedia.org/wiki/Residual-current_device