Nicotine is a vasoconstricter, meaning it makes it harder to pump blood through microcirculation. Furthermore there is no antidote. Nicotine is is absolutely contraindicated. You have a potentially life-threatening problem that cannot be solved by home remedies. You do not know when the situation may deteriorate into what is called a "locked-lung" resulting in death. The fact you have observed the symtoms progressively get worse over a period of time disturbs me. You may find in the future that period may become very short. You need to consult an allergist and a pulmonary specialist. Take extreme care to avoid those substances you can identify that act as antigens and provoke a systemic reaction. Clearly, you require an albuterol emergency inhaler (not the epinephrine sold in the drug stores). Your physician may also prescribe anti-histamines and prednisone for emergencfy use. "Cheaper and convenient" have no meaning for those in the grave.
Agree with the suggestion given above. I would suggest you obtain a referral to an allergist or an ENT who does allergy testing. That is the only way to reliably know what is causing your allergic reaction. Some allergies can be life-threatening as they can precipitate anaphylactic shock in which the swelling can be so severe that it impairs the ability to breathe. Therefore, I would suggest you see someone as soon as possible. Also, keep an epi pen with you in case of an emergency.
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