Types of Pain and Their Qualities — Fast Pain and Slow Pain Pain has been classified
into two major types: fast pain and slow pain. Fast pain is felt within about 0.1 second after a pain
stimulus is applied, whereas slow pain begins only after 1 second or more and then increases
slowlyover many seconds and sometimes even minutes. During the course of this chapter, we shall see
that the conductionpathways for these two types of pain are different and that each of them has specific
qualities.
