How do I know if I have bipolar? The common signs of bipolar disorder Expand Bipolar affects everyone differently and can be difficult to diagnose, but there are some common signs that can help you identify the illness. A mood scale - see our 'Could mood swings mean bipolar?' leaflet - will help you and your doctor understand your mood swings. Take a completed mood scale with you to your next doctor's appointment and tell them how you have been feeling over a period of time (you can take someone with you for support if it makes you feel more comfortable talking about it). Sometimes your GP may refer you to a specialist – usually a psychiatrist. Diagnosis should always be undertaken by an appropriately trained medical professional, who will undertake an assessment to understand a range of factors: eg. behaviour, sleep patterns, life events. It is not advisable to self-diagnose. You may also like to view this: Donate to Bipolar UK today Your donation will help provide a range of services offering the support people need, when they need it. You can make sure there's someone at the end of the phone to listen, a nearby group to share experiences, a 24-hour peer forum and more. Together, we can support the person behind the diagnosis of bipolar.