Vitamin B12 deficiency can be caused by poor diet or malabsorption, leading to fatigue, muscle weakness, and memory problems.

Studies have reported cases of people developing autoimmune diseases like rheumatoid arthritis and lupus after undergoing gastric bypass surgery. But research is mixed as to whether there’s a link.

Immune system disorders in children include primary (inherited) and secondary (acquired) immunodeficiencies, autoimmune diseases, atopic diseases, and immune-mediated inflammatory disorders. Share on ...

Body dysmorphic disorder, also called body dysmorphia, is a mental health condition that affects how you view and feel about your body and appearance. It involves intense preoccupation with one or ...

A sudden sensation of numbness? The nagging headache that just won't quit? That weird weakness in your leg? They're all ...