General symptoms of TB
- lack of appetite and weight loss
- a high temperature
- night sweats
- extreme tiredness or fatigue
These symptoms can have many different causes, however, and are not always a sign of TB.
TB that affects the lungs (pulmonary TB)
Most TB infections affect the lungs, which can cause:
- a persistent cough that lasts more than 3 weeks and usually brings up phlegm, which may be bloody
- breathlessness that gradually gets worse
TB outside the lungs
Less commonly, TB infections develop in areas outside the lungs, such as the small glands that form part of the immune system (the lymph nodes), the bones and joints, the digestive system, the bladder and reproductive system, and the brain and nerves (the nervous system).
Symptoms can include:
- persistently swollen glands
- abdominal pain
- pain and loss of movement in an affected bone or joint
- a persistent headache
- fits (seizures)
TB affecting other parts of the body is more common in people who have a weakened immune system.