PIDs stands for primary immunodeficiencies or primary immune deficiencies. These are a group of over 450 different conditions that affect how the body’s immune system works.
People affected by PIDs have parts of their immune systems missing or not working. This leaves them with reduced or no natural defence against germs such as bacteria, fungi and viruses, which surround us every day. The consequences are that people with PIDs get infections more often than is normal; they can take longer to get better when they have antibiotic treatment and even then the infections can keep coming back.
This susceptibility to infection is one of the most common symptoms of PIDs. Often PIDs are diagnosed early in a child’s life. However, signs of immunodeficiency can also occur in older children, teenagers or adults.