Toes get red and hot to touch every night around 3 am. looks like they're filled with blood. im 18 years old. had cbc and venous doppler, both normal?

Erythromelalgia: You are describing Erythromelalgia, a condition you are describing quite clearly. The tests you had are typically ordered and are normal in most cases. Cause is not clear and only about 5% are hereditary. Treatment can be difficult but may includes medications such as Lyrica, Neurontin, or Cymbalta. There is an association that could give you more information on the internet. Good luck