why is rudolph's nose red

Rudolph's nose is red because of a special condition called "Chronic Infectious Rhinitis." This is a medical term for a chronic inflammation of the nasal tissue caused by an infection. The redness in Rudolph's nose is caused by the increased blood flow to the area, which is trying to fight off the infection and heal the tissue. This condition is usually not serious and can be treated with antibiotics and other medications.