users suffer headaches
while using, most actually take headache remedy before using.
Meth tends to cause 2 kind of headaches:
1) Starting 1 two 3 hours after use (time changes depending of type of use)
usually is a tension headache
due to muscle tension while high and higher blood pressure with pulsating temples due to vaso costriction
2) short term headache, onset 5 minutes after use and lasting 1 - 2 hours. This is due to inhaling the cut or the manufacturing process leftovers not washed away. This is similar to sniffing gasoline.
I can be more precise if you tell me how you used it (oral, insufflated, smokek, IV)