Sounds to me like you haven't been using much, if any, dust control. As such, you may have finally become 'sensitized' to a wood in your shop, and if that is the case you definitely have a serious ongoing problem.
Being allergic to something is not too bad - not good, but not to bad. Becoming 'sensitized' to something is far, far worse as it will only get worse as you are exposed to it more. You will never overcome being sensitized. That is the reason many wood workers MUST control their exposure to the dust they generate AND the skin contact.
Do you know what woods you have worked with most recently? Were you aware of any skin reaction? Did your eyes water and or get really puffy and swollen? I bet you had a cough shortly after working in the shop too.
All those are but a few of the reactions one experiences with many of our most worked woods. Oak is really hard on some, and most exotics will find a person that is allergic and attack them with a vengeance. You will have to install a VERY EFFECIENT HEPA filter on your dust collection device (assuming you have one). If you do not have a system installed you must do so if you want to continue to use your wood shop.
Sorry for the bad 'news', but I just went through all this with my uncle who had a near death experience while working with Cocobolo. He really was near death when his wife found him and had not a fire department been right next door he probably would have died according to the doctors. He spent three weeks in the hospital ICU and then another few weeks going to respiratory therapy and his breathing is still not right even after six months.
You are yet another example of how important it is to have damn great dust control. The wearing of a full face dust mask is also in your immediate future. Your doctor will need to know all the woods you have been using lately and I'll bet you a new drill bit that he finds one or possibly more that you are seriously endangered by.
Check out the BIG difference in allergic vs. sensitized. Ask the doctor and he should be able to explain to you the dangers of each.
Good luck on getting better ... [
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