What are the symptoms a psychologist looks for to diagnose someone with bipolar?

Manic episode. Contrary to popular belief, a person may have bipolar disorder and never have been depressed. A manic episode is a period of an elevated or irritable mood associated with sleep problems, rapid speech and racing thoughts. A person may engage in risky and dangerous behaviors and in severe cases, may even become psychotic with grandiose delusions thinking they are very important with special skills.
Bipolar sx. Unstable mood, at times, happy, energetic, outgoing, ideas flow ++ followed by episodes of depression, no energy, isolation, no pep to do anything, irritable, crying. A person can be happy and even euphoric for days or even weeks then drop severely depressed for weeks of months and can be suicidal. Sx varied tremendously between fast cyclers to very slow cyclers. Anxiety can be much more severe.
Bipolar. Bipolar I and bipolar II, In the first, manic phases are more severe, and in the second, depressive phases are more severe. There is also cyclothymia which is a low grade version of bipolar disorder in general, where mood swings are not as severe in either direction, manic or depressive. Different people exhibit different symptoms, and no two bipolar sufferers are alike.
Possibilities. Reduced need for sleep; episodes of extreme energy, rapid talk, doing to many goal directed behaviors at once: combined with episodes of depressed mood, loss of interest, thoughts of death, loss of appetite.