What causes baldness in cancer therapy?

Chemotherapy: Many but not all cancer chemotherapy drugs can cause temporary loss of hair. Many anti-cancer drugs target cells that are growing and dividing quickly. Hair follicles normally have a rapid growth rate and are therefore damaged by some chemotherapy drugs leading to hair loss. Similarly radiation treatments that involve the scalp area can lead to hair loss.

Chemotherapy.: Many chemotherapy trials and agents acn cause hair loss.

Drugs & radiation: Drugs and radiation target rapidly dividing cells, as cancer cells tend to divide more than most normal cells. Hair growth requires cell division in hair follicles and the drugs and radiation that inhibits cell division of cancer cells also inhibits cell division in hair follicles causing loss of hair, not just baldness. The hair loss is general in systemic chemotherapy and local in x-rays.