Health experts are flummoxed by diagnosing, treating this type of illness
                                
                                
                                    (Newser) -
                                    In her two years of battling COVID-19, Lindsay Polega has been referred to, in order: an immunologist, cardiologist, nephrologist, endocrinologist, neurologist, then the immunologist again. Still, she's dealing with a list of symptoms including chest pain, hypertensive spikes, and hand numbness. Scrolling on her cellphone has caused vertigo, and...