What causes a dried blood menstruation?

There are several potential causes of dried blood menstruation, including:

1. Endometrial Atrophy: This condition occurs when the lining of the uterus (the endometrium) becomes thin and underdeveloped. As a result, the menstrual blood may be scanty and appear dried or brown in color. Endometrial atrophy can be caused by various factors, including aging, hormonal imbalances, and certain medications.

2. Asherman's Syndrome: This is a condition characterized by the formation of scar tissue inside the uterus, often due to trauma during procedures like dilation and curettage (D&C). The scar tissue can interfere with the normal shedding of the endometrial lining during menstruation, leading to dried or scanty periods.

3. Polycystic Ovary Syndrome (PCOS): PCOS is a hormonal disorder that affects women of reproductive age. It can lead to irregular periods, and when menstruation does occur, the blood flow may be lighter than usual and have a dried appearance.

4. Pregnancy Loss: Early pregnancy loss, such as a chemical pregnancy or miscarriage, can cause spotting or light bleeding that may appear dried or brown in color.

5. Certain Medications: Some medications, including hormonal contraceptives, certain chemotherapy drugs, and anticoagulants (blood thinners), can affect menstrual bleeding patterns and lead to dried blood menstruation.

It's important to note that if you experience a sudden change in your menstrual bleeding pattern, including dried blood menstruation, it's essential to consult a healthcare professional for proper evaluation and diagnosis.