Red spots on skin and swollen gland

This morning, I noticed some tiny reddish/ brownish "specks" on my thighs. It seemed peculiar, but I didn't think much of it. I got home from work a couple of hours ago, and was changing out of my work clothes, and I noticed the top of my feet are covered in these "specks". I can kind of see them on the rest of my legs, as well, and I've noticed patches of them are kind of showing up on my arms, hands, stomach, chest, and back. They haven't itched, at all (although, now that I've got them on my mind, I kinda feel itchy all over; that might just be all in my head, though). They're not raised at all, or anything. They almost look like some one took a pen and put tons of tiny dots on my feet and legs.

I can't say I've noticed anything like this before. I'm not sure what the cause is, or if this is anything that warrants any concern. I can't think of anything I've really done differently lately, or anything, that might have triggered something. I did recently have some kind of swollen gland in my neck that's almost gone now (though I've kind of developed a couple of sores in my mouth, which I read are related to the swollen gland), so I don't know if this could be a part of it, too. I've also been pretty sick yesterday and today because I've been upset about some troubling news I've found about my dog. I dunno; is it like an allergic reaction, or something? What's the deal?