Depression is often misdiagnosed because its symptoms can be mistaken for other conditions. For example, fatigue and sleep problems can be attributed to a number of physical or mental health conditions. Likewise, loss of interest in activities, changes in appetite, and difficulty concentrating can be symptoms of both depression and anxiety.
It's important to see a mental health professional for an accurate diagnosis. Depression is a treatable condition, but it's important to get the right diagnosis so you can get the most effective treatment.