Why do I have visible veins and joint pain?

From what you are telling me, a cat must have bitten you. And even though it didn't bleed, you saw a burning sensation and a red dot after the event. This is a possible result of bacteria from the cat's mouth. It is important to wash the area with soap and water. Check for any swelling, pain, or redness. If you see anything out of the ordinary, don't hesitate to see a doctor.

You may be dealing with a cold sore that’s popped up on your top lip, making it hurt and itch. That’s probably because of a virus called herpes simplex. Acyclovir is a good choice for getting some relief from this. Just use it like they tell you to. Doing this can help you heal better faster and help lessen the signs and symptoms. 

You may have­ sunken eye socke­ts and dark circles. Many things can cause this. It could be due­ to your genes, not enough sle­ep, or not drinking enough water. To make­ it better, be sure­ to get plenty of rest and drink lots of wate­r. You can also try using an eye cream to add moisture­ to the area. Taking care of your ove­rall health and getting good slee­p can help your eye­s look better.