Question: How does one treat pain caused by DOMS
About the article "Marathon", section "After a marathon".

Candidate passages:
Delayed onset muscle soreness (DOMS), also called muscle fever, is the pain and stiffness felt in muscles several hours to days after unaccustomed or strenuous exercise.
The soreness is felt most strongly 24 to 72 hours after the exercise.
It is thought to be caused by eccentric (lengthening) exercise, which causes microtrauma to the muscle fibers.
After such exercise, the muscle adapts rapidly to prevent muscle damage, and thereby soreness, if the exercise is repeated.
Delayed onset muscle soreness is one symptom of exercise-induced muscle damage.
The other is acute muscle soreness, which appears during and immediately after exercise. 
The mechanism of delayed onset muscle soreness is not completely understood, but the pain is ultimately thought to be a result of microtrauma – mechanical damage at a very small scale – to the muscles being exercised.DOMS was first described in 1902 by Theodore Hough, who concluded that this kind of soreness is "fundamentally the result of ruptures within the muscle".
According to this "muscle damage" theory of DOMS, these ruptures are microscopic lesions at the Z-line of the muscle sarcomere.
The soreness has been attributed to the increased tension force and muscle lengthening from eccentric exercise.
This may cause the actin and myosin cross-bridges to separate prior to relaxation, ultimately causing greater tension on the remaining active motor units.
This increases the risk of broadening, smearing, and damage to the sarcomere.
When microtrauma occurs to these structures, nociceptors (pain receptors) within muscle connective tissues are stimulated and cause the sensation of pain.
Another explanation for the pain associated with DOMS is the "enzyme efflux" theory.
Following microtrauma, calcium that is normally stored in the sarcoplasmic reticulum accumulates in the damaged muscles.
Cellular respiration is inhibited and ATP needed to actively transport calcium back into the sarcoplasmic reticulum is also slowed.
This accumulation of calcium may activate proteases and phospholipases which in turn break down and degenerate muscle protein.
This causes inflammation, and in turn pain due to the accumulation of histamines, prostaglandins, and potassium.
An earlier theory posited that DOMS is connected to the build-up of lactic acid in the blood, which was thought to continue being produced following exercise.
This build-up of lactic acid was thought to be a toxic metabolic waste product that caused the perception of pain at a delayed stage.
This theory has been largely rejected, as concentric contractions which also produce lactic acid have been unable to cause DOMS.
Additionally, lactic acid is known from multiple studies to return to normal levels within one hour of exercise, and therefore can't cause the pain that occurs much later. 
It is used to treat pain or inflammation caused by arthritis or other inflammatory diseases and conditions like synovitis.
Nabumetone works by reducing the effects of enzymes that cause pain and inflammation. 
Antipyrine and benzocaine ear drops is a medication for the treatment of ear pain caused by otitis media.
It combines antipyrine, a pain reliever and benzocaine, a numbing agent to treat ear pain.
It is sold as Auralgan, Aurodex, Auroto, among other brands, and is abbreviated as A/B otic drops. 
ThermaCare is the brand name of a disposable heating pad made by Pfizer Consumer Healthcare.
A type of Continuous Low-level Heatwrap Therapy (CLHT), ThermaCare heatwraps activate upon contact with the air, providing approximately eight hours of heat directly where the heatwrap is applied.
Thermacare heatwraps are available for specific applications, including neck or wrist pain, low back pain, knee pain and menstrual cramps.
The brand was first introduced in 2001 by Procter & Gamble.
P&G sold the ThermaCare brand to Wyeth in 2008, and merged with Pfizer in 2009.
Continuous Low-level Heatwrap Therapy (CLHT) has been shown to provide better results than cold therapy in the early treatment and prevention of Delayed Onset Muscle Soreness (DOMS)--muscle soreness that occurs within 1 to 2 days of physical exertion.
In a low back pain study conducted at the U.S. Spine & Sport Foundation in San Diego, California in 2006, participants treated with Continuous Low-level Heatwrap Therapy (CLHT) prior to exercise reported less intense pain and less trouble moving after 24 hours than the control group.
Study participants treated with the heatwraps also showed greater (138%) pain relief than those who received standard cold pack treatment, according to the study's research director, John Mayer, Ph.D.
The study concluded that heatwraps were effective in the early treatment and prevention of Delayed Onset Muscle Soreness (DOMS)--soreness that occurs within one to two days of physical exertion.
Thermacare heatwraps have been studied in 13 randomized controlled clinical trials for muscle pain relief efficacy.