Difficulty with breathing and asthmatic, was once tested positive with tb and took medication and was cured?

Screening diagnosis: If positive skin test, then you were exposed to TB, can have latent TB which can become active TB at the rate of 1%per year. Treatment is given to reduce chance of active TB. With treatment, it does get cured and so is active TB. You can get exposed to it again and previous treatment will not change future infection. See your doctor .for your symptoms, most likely unrelated toTB.