It can certainly be from the meth. The base form you are smoking
is extremely caustic to your lung tissue. This can cause severe inflammation and even ulceration of your airways. It will also cause bronchospasm
(like having an asthma
attack). When your airways get like this, it takes months to completely heal and for you to feel normal again. I recommend you stop the meth smoking immediately. You should also probably get a chest x-ray or cat-scan if you can. Meth is often "cut" with a lot of different things that can cause severe lung damage.
To treat it, #1: Stop smoking meth. #2: Start a regimen of inhaled corticosteroid +/- albuterol
when feeling short of breath. But first, make sure to get a chest x-ray to rule out masses, abscess
, or infection.