Girlfriend seems to have a quasi-honey comb shaped rash on one leg around her knee.She noticed it for the first time a couple hours ago.  She claims it looks a little worse now.  No itching, dryness, raised skin, anything else appearing abnormal.  Thoughts on what this could be?
Hi, After reading you query I can make out that your girlfriend is suffering from cold induced injury to the skin. It is known as Lived reticular. Livedo reticular is a mottled, chaotic discoloration of the skin, which has a characteristic network pattern. It is accentuated by cold. For the treatment part most important thing is protection form cold weather. Ask her to wear warm clothing. Do exercise daily. If she is over weight then weight reduction is must. Take care.