One type of blood which is seen by women is called istihaza and a woman in that state is called mustahaza.
398. Istihaza is usually yellowish and cold and is emitted without gush or irritation and is also not thick. It is, however, possible that at times the colour of the blood may be red or dark, and it may also be warm and thick and may be issued with gush and irritation.
399. There are three kinds of istihaza viz. slight (Qalila), medium (Mutawaassita) and excessive (Kathira). Explanation is given below:
Little blood (Qalila): If the blood remains on the surface of the wool or pad etc., (placed by a woman on her private part) but does not penetrate into it, the istihaza is called qalila.
Medium blood (Mutawassita): If the blood penetrates into the cotton (or pad etc.), even partially, but does not soak the cloth tied on the outer side, the istihaza is called mutawassita.
Excessive blood (Kathira): If the blood penetrates through the cotton, soaking it and the cloth (etc.) around it, the istihaza is called kathira.