(An underactive thyroid leads to hypothyroidism .). Graves disease is the most common cause of hyperthyroidism. It is due to an abnormal immune system response that causes the thyroid gland to produce too much thyroid hormone.Graves disease is most common in women over age 20.raves disease is an autoimmune disorder that leads to overactivity of the thyroid gland (hyperthyroidism). An autoimmune disorder is a condition that occurs when the immune system mistakenly attacks and destroys healthy tissue.
At this point, symptoms depend on the cancer 's location within the pancreas 1  : Pancreatic cancer in the head of the pancreas tends to cause symptoms such as weight loss, jaundice (yellow skin), dark urine, light stool color, itching, nausea, vomiting, abdominal pain, back pain, and enlarged lymph nodes in the neck.s it grows and spreads, pancreatic cancer affects the whole body. Such symptoms can include: 1  Weight loss. 2  Malaise. 3  Loss of appetite. 4  Elevated blood sugars.
In the vast majority of cases, symptoms only develop after pancreatic cancer has grown and begun to spread. Because more than 95% of pancreatic cancer is the exocrine type, we'll describe those symptoms first, followed by symptoms of rare forms of pancreatic cancer. Pancreatic Cancer Symptoms: Location Matters