Harvard Health: Thinning hair in women: Why it happens and what helps

Medications to treat hair loss

Treatment depends on the underlying cause, says Scott. Sometimes simply addressing a medical condition prompting hair loss will be enough for the hair to regrow. In other instances, a woman might consider a medication like minoxidil (Rogaine), which helps with certain types of hair loss, or another treatment to replace or regrow lost hair.

A newer option being used to treat hair loss is platelet-rich plasma (PRP) injections. For this treatment, the doctor draws your blood, divides it into its separate components, recombines the blood fluid (plasma) with a high concentration of platelets (structures in the blood that help with clotting, among other functions), and introduces the resulting preparation back into the scalp.

“The science on this isn’t totally worked out. We still don’t completely understand the mechanism behind PRP, but growth factors contained in platelets can stimulate regeneration of hair follicles and other tissues as well,” says Scott.

In addition, low-level LED laser lights have been found to be helpful in regrowing hair in some cases. It’s likely that even more treatments will be developed in the near future.

Cosmetic options for hair loss

When medical treatments fall short, women can also consider cosmetic options to make up for lost hair, such as wearing a wig. At the other end of the spectrum is hair transplantation, a surgical procedure that moves active follicles from the back of the scalp to areas where the hair is thinning. Once transplanted, the hair grows normally.

Hair transplantation is typically performed as an outpatient surgical procedure. In appropriate patients, it can be extremely successful, but it won’t work for everyone, says Scott. One drawback is the expense: it can cost thousands of dollars and is not covered by insurance. The procedure also requires recovery time. And it may not be appropriate for women who have diffuse thinning across the whole scalp. It’s more effective in treating smaller, more defined areas of balding.

(Kelly Bilodeau is executive editor of Harvard Women's Health Watch.)