Final answer:
The red streaks on the patient's skin could be striae or indicate a severe underlying condition like a skin infection or Kaposi's Sarcoma, especially with compromised immunity. Red-blue discoloration suggests vascular changes or hemorrhaging, potentially due to gangrenous inflammation and infection.
Step-by-step explanation:
The term referring to the red streaks seen on the patient's skin is likely to be striae, also known as stretch marks. However, given the context of skin discoloration and rapidly growing mass, this may also represent a symptom of a severe underlying condition such as a skin infection or a vascular condition such as Kaposi's Sarcoma, especially if the immune system is compromised.
Skin discoloration in the form of red-blue patches suggests vascular changes or hemorrhaging, most likely caused by infected tissue or an underlying neoplastic process. The rapid growth of the mass and changes in the skin could be a sign of gangrenous inflammation and infection. This condition necessitates urgent medical assessment to diagnose the cause accurately and begin appropriate treatment to prevent further tissue damage or systemic spread.