Heparin-induced thrombocytopenia (HIT) occurs in up to 1% of patients receiving unfractionated heparin. HIT may occur even when very-low-dose heparin (eg, used in flushes to keep IV or arterial lines open) is used. The mechanism is usually immunologic.
The hair loss can seem more extreme if your hair grew much more than normal during pregnancy, or if you have long hair. Most women will return to their usual hair growth cycle within six months, or between 6 and 12 months after birth.
A rise in estrogen levels during pregnancy interrupts the normal hair-loss pattern and causes you to retain more of your hair than you normally would, explains the American Pregnancy Association. After giving birth, the hormone levels return to normal and the excess hair may fall out all at once. This hair loss is temporary and usually stops after about three to four months. A drop in estrogen levels related to discontinuation of birth control pills, menopause or miscarriage can also cause hair loss.