It can be difficult to tell the difference between strep throat symptoms and symptoms of a viral infection, like mononucleosis (mono), which is also common in teens. Just like strep throat symptoms, with mono you will experience a sore throat, fever, swollen lymph nodes, rash and body aches.
Type 1 Diabetes. Type 1 diabetes is an autoimmune disease. An autoimmune disease results when the body's system for fighting infection (the immune system) turns against a part of the body. In diabetes, the immune system attacks the insulin-producing beta cells in the pancreas and destroys them. The pancreas then produces little or no insulin.
For example, patients with an organ-specific autoimmune disease are often found to have more than one. The example of type 1 diabetes may be most instructive; of those with type 1 diabetes, up to 30% have autoimmune thyroid disease, 5% have celiac disease, 10% have vitiligo, and another 10% have pernicious anemia.