Symptoms of manic depression, also known as bipolar disorder, include alternating moods between feelings of worthlessness or emptiness to high-energy stages known as mania where the patient feels grandiose and invincible, explains Healthline. Manic depression can cause forgetfulness, difficulty with decision making or concentration, and changes in normal behavior, whereas the mania stage of the disorder can cause patients to engage in risky behaviors.
Patients with manic depression may become negative or pessimistic, experience feelings of guilt, appear to be sad or anxious, and have thoughts of suicide or death when in the midst of the depressed phase, warns WebMD. Without warning, patients can enter mania episodes that prompt them to take on new projects they cannot handle, have unrealistic beliefs about their abilities and participate in high-risk behaviors such as unsafe sex, spending sprees, gambling or risky investments.
People with manic depression may also cope with physical ailments such as digestive disorders, headaches, chronic pain or insomnia that do not respond to conventional treatment. Manic depression can cause changes in appetite that lead to weight loss or weight gain. Sleep patterns may also be interrupted with early morning awakenings or oversleeping. During the mania phase of the disorder, people become restless or easily distracted, irritable, agitated, and jumpy. Some patients experience periods of excitement, intense joy or euphoria.