The resulting back pain reduces your sleep. As the injury persists, you worry about being unable to go back to work, about finances, and about your health in general. With depression setting in, you spend more time on your own watching TV till wee hours of the morning, and getting up at uncharacteristically late hours of the morning. Disrupted sleep patterns must be dealt with as soon as possible since the problem doesn't usually just go away. It usually gets worse.
Many people are suspicious of using medications to help with sleep, and rightly so.
It really depends on what the medication does. Muscle relaxants are often prescribed for people who experience kicking and excessive movements at night. Pain killers are used for people with chronic pain, though in these cases, the use of pain killers must be carefully monitored by a medical physician. For problems such as sleep apnea and snoring, measures such as weight reduction, reducing alcohol consumption, and changing sleep positions, and more drastic measures such as surgery or a nose mask device may be used. Do not simply use sleeping pills that may mask the underlying problem.