1 But in some cases they are left in place for up to 6 weeks.  Walking casts, splints, special shoes, or wooden shoes are sometimes used. Regular shoes can sometimes be worn in about 4 to 5 weeks, but some procedures require wearing special shoes for about 8 weeks after surgery.
No. Brain freeze is a headache most commonly associated with the quick consumption of cold substances, such as ice cream. When the cold substance comes into contact with you â¦ r palate or the roof of your mouth and sinus cavities it causes the blood vessels to vasoconstrict or get smaller.
We actually still do not really know the physiological cause of the brain freeze. That's the true explanation. We know what triggers it, but we don't know the nitty gritty of it. Only thing we can be sure of is that if you want to avoid it, don't eat your ice cream too fast, or suck down your Slurpee too fast.