Primary Immunodeficiency (PID) disease that affects T-cells or the immune system as a whole usually shows up in babies. But some disorders that impact antibodies may not be noticeable until a person is older. In less severe cases, people may experience frequent infections before PID is considered a possibility.
Signs that may indicate PID include:
- Recurrent, unusual, or difficult to treat infections
- Poor growth or loss weight
- Pneumonia, ear infections, or sinusitis
- Family history of PID
- Autoimmune disease