Here's a salient study regarding RSI: "Two hundred ninety-seven patients medically certified with a work-related upper extremity industrial illness underwent a

Here's a salient study regarding RSI: "Two hundred ninety-seven patients medically certified with a work-related upper extremity industrial illness underwent a systematic search for concurrent medical diseases. <snip>. One hundred nine separate atraumatic illnesses (mainly hypothyroidism, diabetes mellitus, and various arthropathies) capable of causing arm pain or CTS were diagnosed in a third of all patients." [1] Email me if you like for more info about hypothyroidism (also see my previous comments, I may be becoming the resident thyroid crank). "Brain fog" and anxiety would be consistent symptoms. The condition affects several percent of the population. Getting a diagnosis can be tricky for certain manifestations of the condition (e.g. in the UK for certain blood test results doctors won't typically treat the condition unless patients request it). Here's another study that may be relevant: "Our data show a significant association between shift work and autoimmune hypothyroidism" [2], i.e. the environmental stress placed on the body by shift work could perhaps trigger this disease. I mention this because you mentioned a demanding family life. If that involves a young baby that could approximate shift work. [1] http://jamanetwork.com/journals/jamainternalmedicine/fullarticle/208425 http://jamanetwork.com/journals/jamainternalmedicine/fullart... [2] https://www.ncbi.nlm.nih.gov/pubmed/17291404 https://www.ncbi.nlm.nih.gov/pubmed/17291404