Severe cases develop disability and even heart failure. If chemical particles get under cuts in the skin, ulcers or lumps can develop. These need surgery to remove chemical particles. Allergic skin rashes can also occur, with itching and redness. These improve away from exposure and can come back with exposure.
Kidney stones can occur from high or repeated exposure.
Careful exam of skin and lungs. Any evaluation should include a careful history of past and present symptoms with an exam. Medical tests that look for damage already done are not a substitute for controlling exposure. Request copies of your medical testing. You have a legal right to this information under OSHA 1910.20.