About one in 10 people infected with TB bacteria go on to develop active TB at some point in their life.A person with active TB will have symptoms, which could be: * Swollen glands, especially in the neck * Tiredness * Appetite Loss * Chest pain when you breathe in, caused by inflammation of the membranes lining your lungs (pleurisy) * A persistent cough - there may also be lots of phlegm, even so