Patient's question:
Here is the English translation of the provided text, with the newline characters ("") kept as they are:"Two ears gradually turned black starting in the second half of 2011. At first, I thought it was frostbite and didn’t pay much attention. Later, it became darker and darker, so I took him to Hangzhou Children’s Hospital to see a doctor. They said it was a skin condition and prescribed some ointment to apply. It healed, but it has returned this year. I don’t know what to do."
Doctor's answer:
It may be vasculitis, giant cell arteritis, or phlebitis, which is a non-specific vasculitis primarily characterized by medial damage. The entire vascular wall shows diffuse irregular thickening and fibrosis. The thickened intima proliferates inward, causing stenosis and obstruction of the vessel. The treatment is relatively complex and generally falls under the category of immune diseases. High-dose Simiao Yong'an Decoction can be considered for treatment.