Items in AFP with MESH term: Dopamine Agonists
Diagnosis and Management of Galactorrhea - Article
ABSTRACT: After infancy, galactorrhea usually is medication-induced. The most common pathologic cause of galactorrhea is a pituitary tumor. Other causes include hypothalamic and pituitary stalk lesions, neurogenic stimulation, thyroid disorders, and chronic renal failure. Patients with the latter conditions may have irregular menses, infertility, and osteopenia or osteoporosis if they have associated hyperprolactinemia. Tests for pregnancy, serum prolactin level and serum thyroid-stimulating hormone level, and magnetic resonance imaging are important diagnostic tools that should be employed when clinically indicated. The underlying cause of galactorrhea should be treated when possible. The decision to treat patients with galactorrhea is based on the serum prolactin level, the severity of galactorrhea, and the patient's fertility desires. Dopamine agonists are the treatment of choice in most patients with hyperprolactinemic disorders. Bromocriptine is the preferred agent for treatment of hyperprolactin-induced anovulatory infertility. Although cabergoline is more effective and better tolerated than bromocriptine, it is more expensive, and treatment must be discontinued one month before conception is attempted. Surgical resection rarely is required for prolactinomas.
ABSTRACT: Parkinson's disease is a common neurodegenerative disorder that can cause significant disability and decreased quality of life. The cardinal physical signs of the disease are distal resting tremor, rigidity, bradykinesia, and asymmetric onset. Levodopa is the primary treatment for Parkinson's disease; however, its long-term use is limited by motor complications and drug-induced dyskinesia. Dopamine agonists are options for initial treatment and have been shown to delay the onset of motor complications. However, dopamine agonists are inferior to levodopa in controlling motor symptoms. After levodopa-related motor complications develop in advanced Parkinson's disease, it is beneficial to initiate adjuvant therapy with dopamine agonists, catechol O-methyltransferase inhibitors, or monoamine oxidase-B inhibitors. Deep brain stimulation of the subthalamic nucleus has been shown to ameliorate symptoms in patients with advanced disease. Depression, dementia, and psychosis are common psychiatric problems associated with Parkinson's disease. Psychosis is usually drug induced and can be managed initially by reducing antiparkinsonian medications. The judicious use of psychoactive agents may be necessary. Consultation with a subspecialist is often required.
Restless Legs Syndrome - Article
ABSTRACT: Restless legs syndrome is a common neurologic movement disorder that affects approximately 10 percent of adults. Of those affected with this condition, approximately one third have symptoms severe enough to require medical therapy. Restless legs syndrome may be a primary condition, or it may be secondary to iron deficiency, renal failure, pregnancy, or the use of certain medications. The diagnosis is clinical, requiring an urge to move the legs usually accompanied by an uncomfortable sensation, occurrence at rest, improvement with activity, and worsening of symptoms in the evening or at night. Restless legs syndrome causes sleep disturbances, is associated with anxiety and depression, and has a negative effect on quality of life. Treatment of secondary causes of restless legs syndrome may result in improvement or resolution of symptoms. Currently, there is little information regarding the effects of lifestyle changes on the symptoms of restless legs syndrome. If medications are needed, dopamine agonists are the primary medications for moderate to severe restless legs syndrome. Other medications that may be effective include gabapentin, carbidopa/levodopa, opioids, and benzodiazepines.
Treatment of Early Parkinson's Disease - FPIN's Clinical Inquiries
Dopamine Agonists for Early Parkinson Disease - Cochrane for Clinicians