We have been seeing a lot of this lately. The caterpillar stage of this moth can cause an allergic type reaction. This can occur after touching the caterpillar directly or even touching a surface where the caterpillar was recently. The rash can look like little bites but there is no entry point like a bite. The spots can be different sizes. Use a little cortisone cream on the spots and Benadryl for itch. Aside from being a little itchy the rash is not a concern.