Hello--I have a single hickey like mark on my arm in the bicep area. There is no swelling, itching, tenderness, break in the skin, etc. It is fading as a hickey would. In theory i can reach this area with my mouth, but its is rather uncomfortable. At such an angle and distance, it would be difficult to bite or suck to produce such a mark. I am recently widowed and live with a cat. I visit my son and his cat on weekends and that is the sum of my social life. I have been around both animals for some time. Thoughts?