What is the ruling on blood with varying characteristics that lasts for five to six days, and comes after a valid period of purity, for a woman suffering from severe polycystic ovaries, taking into account that at the beginning of the cycle it was light red blood, then it became black blood with an odor, and in the last three menstrual cycles it became dark red blood with black clots, and it has no odor, and it does not flow profusely, but sometimes stains clothes; and is it considered menstrual blood or irregular bleeding (istihada) according to the four madhhabs?
We issue a fatwa that this blood is menstrual blood, as long as it is seen at a time when it is possible for menstruation to occur. It is obligatory for you to stop praying and to refrain from what is forbidden to a menstruating woman when you see it, regardless of its color, and to continue in this state until it ceases. Then you should perform ghusl and pray.
Summarized from the full answer at Ftawy · reviewed Sep 2, 2026
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