Disclosed are methods of treating pain in a mammal, which may include the step of administering human growth hormone to a mammal in need thereof. The pain treated by the disclosed methods may be of a type caused by inflammation induced mechanical and/or thermal hypersensitivity, and may include, for example, a pain type resulting from one or more conditions selected from peripheral injury pain, post-operative pain, cutaneous inflammation, cutaneous incision, muscle incision, or chronic pain. Disease states in which the disclosed methods may be used include fibromyalgia, sickle cell anemia, epidermolysis bullosa, erythromelalgia, complex regional pain syndrome, or generalized muscle pain.