Yes, Addison's disease can go undiagnosed for years. This is because the signs and symptoms of the condition can be very mild in the early stages and may not be immediately noticed. Additionally, Addison's disease is a relatively rare condition, so it is often overlooked and misdiagnosed as other conditions.
Early signs of Addison's disease may include fatigue, muscle weakness, weight loss, dizziness, and changes in mood. These symptoms can be easy to miss or attribute to other causes, like stress or the flu. As the condition progresses, other symptoms may become more apparent, such as darkening of the skin, low blood pressure, salt cravings, and changes in blood sugar levels.
In order to diagnose Addison's disease, a doctor would need to perform a physical exam and order blood tests. These tests would include hormone levels, cortisol levels, and aldosterone levels. If any of these tests come back abnormal, the doctor may order additional tests to rule out other potential causes.
If left untreated, Addison's disease can lead to severe complications including heart failure, shock, coma, and even death. Therefore, it is important to be aware of the signs and symptoms of the condition and seek medical attention if any of them are present.