The Difference Between Menstruation and Irregular Non-Menstrual Bleeding

Question:
The questioner asks: What is the difference between menstruation and irregular non-menstrual bleeding?

Answer:
Menstruation is the blood that comes down at known times, at specific times, and it is not the result of an illness, but rather the result of nature and the innate disposition that Allah has placed in the woman. This is menstruation. As for irregular non-menstrual bleeding, it is blood resulting from an illness, a hemorrhage. Menstruation comes from the base of the uterus, whereas irregular non-menstrual bleeding comes from a vessel in the lower part of the uterus, and it is a hemorrhage. Menstruation has characteristics: it may have a foul smell, or it may be thick and heavy, or it may be black. Yes.
Its color is black; these are the characteristics of menstruation. As for irregular non-menstrual bleeding, its blood is red, it is red blood, and it is also light blood, not thick or heavy. The clear difference between them is that the blood of irregular non-menstrual bleeding has no specific time; it appears and flows and bleeds at any time, unlike menstruation, which only appears at specific times, at specific times that women know, and then it stops. Its minimum duration is one day and night, and its maximum is fifteen days. This is menstruation. As for irregular non-menstrual bleeding, it has no limit. Some women have irregular non-menstrual bleeding constantly, while for others, most of their time is spent with irregular non-menstrual bleeding.
Menstruation prevents prayer, prevents fasting, and prevents intercourse; it has its rulings. As for irregular non-menstrual bleeding, it does not prevent prayer; rather, prayer is obligatory for the woman with irregular non-menstrual bleeding. She does not leave off fasting, and the woman with irregular non-menstrual bleeding does not leave off fasting. Intercourse is disliked but not forbidden in this case. So there are many differences in reality and in ruling. There is a difference in ruling and a difference in reality between menstruation and irregular non-menstrual bleeding. The details of this are found in the books of Islamic jurisprudence. Yes.