I have reviewed and considered all of the competent and substantial evidence on the whole record. Based on my review of the evidence, as well as my consideration of the relevant provisions of the Missouri Workers' Compensation Law, I believe the decision of the administrative law judge (ALJ) should be reversed.
I disagree with the findings made by the ALJ and adopted by the Commission as to the credibility of claimant's ${ }^{1}$ testimony regarding the onset of symptoms in his hands, and the credibility of the medical expert opinions presented.
The ALJ noted that claimant's medical records do not reference upper extremity symptoms until October 2019. Based on that fact, the ALJ discounted claimant's testimony that his symptoms began in 2015 and erroneously found that testimony to be not credible. I disagree with that credibility finding.
I find credible and persuasive Dr. Bruce Schlafly's expert opinion that in terms of occupational exposure, "there can be cumulative exposure for over a number of years that eventually results in symptoms perceived by the patient." Dr. Schlafly's testimony provides context for understanding why claimant did not seek medical treatment for the symptoms in his upper extremities until 2019. As Dr. Schlafly noted, "individuals vary in terms of sensitivity to symptoms," and "some people are stoic; some people are very sensitive."
When claimant developed symptoms in his hands in 2015, he did not immediately seek treatment; instead, he continued working for employer and dealt with his symptoms by switching hands as needed to perform his work. The delay in seeking medical treatment does not affect the credibility of claimant's testimony. Rather, it speaks to claimant's dedication to performing his job, as well as his individual tolerance of and sensitivity to the symptoms he developed while working for employer. I find credible claimant's testimony that he began experiencing symptoms in his hands in 2015 when he was working as a caster for employer.
While I disagree with the ALJ's credibility finding, I agree with the ALJ that the date of onset of symptoms is significant because claimant's job duties as a caster from December 16, 2013 to January 2, 2017, were more hand-intensive than his later duties working for employer as a loading dock/refinery operator.
Dr. Schlafly rendered an opinion of causation after considering the entirety of claimant's work for employer, including claimant's description of the hand-intensive tasks he performed as a caster. In contrast, employer/insurer's medical expert, Dr. David Brown, categorically ignored those tasks when rendering his causation opinion, testifying claimant's caster work was "irrelevant" to the condition in his upper extremities. For that reason, I find that Dr. Brown's causation opinion lacks credibility. I find credible and convincing Dr. Schlafly's opinion that claimant's work for employer was the prevailing factor and the cause of claimant's bilateral carpal tunnel syndrome. I conclude that claimant met his burden of proving employer/insurer is responsible for providing
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[^0]: ${ }^{1}$ The ALJ's award refers to the employee, Brian Cox, as "Claimant." For consistency, I will also use that term to refer to Mr. Cox in this dissenting opinion.
Improve Brian Cox
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medical treatment for claimant's bilateral carpal tunnel syndrome. I would reverse the ALJ's temporary or partial award and require employer/insurer to provide the medical treatment that claimant needs.
Because the Commission majority has decided otherwise, I respectfully dissent.
Shalonn K. Curls
Shalonn K. Curls, Member