What is normal hair loss?
People normally lose around 100 hairs a day. Sometimes follicles synchronize, releasing their hairs all at the same time, a condition called “telogen effluvium.” This is what happens when cats and dogs shed in the springtime. Synchronized shedding can happen in humans after a physically traumatic event — or two to three months after pregnancy. Everyone is born with as many hair follicles as they will ever have. Follicles may change the type of hair they produce, but their number doesn’t typically change.
