Specific antibody deficiency (SAD) is an immune system disorder. It occurs when you have normal levels of antibodies but an insufficient immune response to certain types of bacteria. Antibodies, also ...

Hypogammaglobulinemia is a condition when a person has very low levels of antibodies called immunoglobulins. Someone with this condition may experience frequent infections, such as pneumonia or ...

Primary immunodeficiency (PI) is a group of more than 400 disorders that affect the immune system. In people with PI, the immune system is weakened or missing important components, making it harder ...

Canker sores are common and usually go away on their own in one to two weeks. Thrush is a yeast infection in the mouth and is more common in people with weakened immune systems. Tongue cancer is more ...

All newborns in Manitoba will be screened for a rare genetic disorder affecting the immune system that occurs at much higher rates in this province than in the rest of the world. The provincial ...

For over a decade, Ruth has written for multiple outlets providing patient education, including Health. She has written for health student education companies, collaborating on an anatomy textbook ...

Vitamin B12 is one of eight B vitamins, all of which are essential to helping your body convert food into fuel. But B12 has particularly important roles in maintaining our physical and mental health, ...

Goiter is an abnormal enlargement of the thyroid gland, the butterfly-shaped gland at the base of the neck. While iodine deficiency is a major global cause, both too little and too much iodine can ...