What is menorrhagia and what causes it?

Explanation

### Step-by-Step Text Solution

1. **Definition of Menorrhagia**: Menorrhagia is a medical condition characterized by abnormally heavy or prolonged menstrual bleeding. This means that during menstruation, a woman experiences an excessive amount of blood flow that is continuous and lasts longer than usual.

2. **Symptoms of Menorrhagia**: The primary symptoms include heavy menstrual bleeding, which may require changing sanitary protection frequently, and prolonged periods that last more than seven days.

3. **Causes of Menorrhagia**: The main cause of menorrhagia is hormonal imbalance. Specifically, an imbalance in the levels of estrogen and progesterone in the body can lead to this condition.

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