Nephila clavipes. Arachnology is the scientific study of spiders and related animals such as scorpions, pseudoscorpions, and harvestmen, collectively called arachnids. Those who study spiders and other arachnids are arachnologists. The word arachnology derives from Greek á¼ÏÎ¬ÏÎ½Î·, arachnÄ, spider; and -Î»Î¿Î³Î¯Î±, -logia
Heavy Menstrual Bleeding: Symptoms and Treatment. Heavy menstrual bleeding (called menorrhagia by health care professionals) is defined as soaking a pad and/or tampon every hour or less during each menstrual cycle. For many women, heavy menstrual bleeding is a huge obstacle to their lifestyles.
If your period is heavy enough to require changing more often than every one or two hours, or if you have a period that lasts more than a full week, you may be experiencing menorrhagia. 1. Hormones. A hormonal imbalance during adolescence or menopause is the most common cause of heavy menstrual bleeding. During adolescence, after girls have their first periods and for several years before the onset of menopause, our hormone levels are fluctuating, which often leads to excessive uterine bleeding during our periods.