MRCP UK EXAMINATIONS

Detailed explanation-1: -TB is a disease caused by Mycobacterium tuberculosis. TB disease should be suspected in persons who have the following symptoms: Unexplained weight loss. Loss of appetite. Night sweats.

Detailed explanation-2: -The classification ranges from Class 0, in people with no previous exposure to TB and negative tuberculin skin testing and/or interferon-gamma release assay (2 methods of screening for TB), to Class 3 for active TB infection and Class 5 for suspected TB infection based on signs and symptoms of the disease.

Detailed explanation-3: -Mycobacterium tuberculosis is often difficult to find. This is because of its thick cell wall and its ability to live in isolated body cavities without air, which cannot be reached (see A description of the TB germ). For this reason, the health worker often needs to combine the investigations described above.