Transdermal estrogen and intrauterine devices containing levonorgestrel have also had modest efficacy.Another FDA approved treatment for PMDD is the oral contraceptive with ethinylestradiol and drospirenone (a novel progestin) taken on a 24-4 schedule (24 active pills, 4 inactive pills). It has been shown that hormonal birth control containing drospirenone and low levels of estrogen helps relieve severe PMDD symptoms, for at least the first three months that it is used. The idea behind using oral contraceptives is to suppress ovulation, therefore suppressing sex hormone fluctuations. Another treatment, typically used when other options have failed, is injection of a gonadotropin-releasing hormone(GnRH) agonist with adjunctive estrogen and progesterone or tibolone. This is a last resort because GnRH antagonists can cause medical menopause by shutting down the bodys pathway for reproductive hormones called the hypothalamic, pituitary, gonadal axis. As a result, GnRH therapy presents increased risk of osteopenia (decreased bone density) and cardiovascular disease. This therapy is often reserved for patients considering surgical menopause to test the outcome of the surgery. Surgical Menopause
In a minority of patient who meet specific criteria and drug-based treatments are ineffective or produce significant side effects, hysterectomy and bilateral oophorectomy followed by estrogen replacement therapy is an option Typically, the uterus is removed during the same surgery, and the women is prescribed a low-dose estrogen patch to reduce the symptoms produced by surgically induced menopause. There are five guidelines that should be considered before undergoing a surgical treatment.
Central core disease (CCD), also known as central core myopathy, is an autosomal dominantly inherited muscle disorder present from birth that negatively affects the skeletal muscles. It was first described by Shy and Magee in 1956. It is characterized by the appearance of the myofibril under the microscope. Signs and symptoms
The symptoms of CCD are variable, but usually involve hypotonia (decreased muscle tone) at birth, mild delay in child development (highly variable between cases), weakness of the facial muscles, and skeletal malformations such as scoliosis and hip dislocation.CCD is usually diagnosed in infancy or childhood, but some patients remain asymptomatic until adulthood to middle age. While generally not progressive, there appears to be a growing number of people who do experience a slow clinically significant progression of symptomatology. These cases may be due to the large number of mutations of ryanodine receptor malfunction, and with continued research may be found to be clinical variants. Pathophysiology
Central core disease is inherited in an autosomal dominant fashion. Most cases have demonstrable mutations in the ryanodine receptor type 1 (RYR1) gene, which are often de novo (newly developed). People with CCD are at increased risk for developing malignant hyperthermia (MH) when receiving general anesthesia. Diagnosis
The diagnosis is made based on the combination of typical symptoms and the appearance on biopsy (tissue sample) from muscle. The name derives from the typical appearance of the biopsy on light microscopy, where the muscle cells have cores that are devoid of mitochondria and specific enzymes.Respiratory insufficiency develops in a small proportion of cases.