Your doctor may suspect mononucleosis based on your signs and symptoms, how long they've lasted and a physical examination. He or she will look for signs like swollen lymph nodes, tonsils, liver or spleen, and consider how these signs relate to the symptoms you describe. Blood tests. Antibody tests.
Addison's disease symptoms usually develop slowly, often over several months, and may include: Extreme fatigue. Weight loss and decreased appetite. Darkening of your skin (hyperpigmentation) Low blood pressure, even fainting. Salt craving. Low blood sugar (hypoglycemia) Nausea, diarrhea or vomiting.
Sometimes, however, the signs and symptoms of Addison's disease may appear suddenly. In acute adrenal failure (addisonian crisis), the signs and symptoms may also include: 1  Pain in your lower back, abdomen or legs. 2  Severe vomiting and diarrhea, leading to dehydration.  Low blood pressure.