My husband, age 34, has constant pain in both elbows. he works as a diesel mechanic, does this sound like tennis elbow?

Might be: Suggest he sees his doctor to make sure it is not something else.

Could be...: Lateral epicondylitis (aka "tennis elbow") is a common overuse injury. In order to decrease pain, i recommend you start with rice, see a physician for an official diagnosis. Follow w/ stretching/ strengthening (therapy), & consider couterforce bracing. If these treatments fail he may be a candidate for cortisone/ prp injs. Few people end up needing surgery. http://drmarkgalland.com/category/elbow.