Thank you for your query at DoctorSpring.com
I understand your concern.
Unfortunately the only preventive measure you can take to prevent Raynaud's is to wear hot clothes and gloves and socks as much as possible in the cold climates.
However, this won't really help when you are exposed to -20 degrees.
I will request you to consult a local physician near your college who can write you a prescription for Nifedipine, a drug used to prevent recurrent attacks of Raynaud's and also treat acute cases thereby preventing complications. This is the only US-FDA approved drug, and you can take it as and when required.
Hope this was helpful,
Feel free to discuss further.
Patient replied :
Without the medication, how would I do in Hanover?
You definitely need the medicine, as there is no other way to prevent the attacks, apart from completely avoiding places with that kind of temperature.
I will advise you consult a local GP there and get Nifedipine along with you. Whenever the attacks are severe, and painful, you can take Nifedipinie SOS.