If you get diarrhoea it is important to drink plenty of fluids. Some women notice their hair becomes thinner while taking Arimidex. This is usually mild and the hair goes back to normal at the end of treatment. It is important to drink plenty of fluids. Let your doctor know if you are getting headaches as medication can be prescribed to help.
Skin rashes .
Rarely, Arimidex can cause skin rashes. Vaginal bleeding . This is rare and has usually occurred after changing from existing hormone therapy to treatment with Arimidex. If bleeding continues, tell your doctor or breast care nurse. This side effect is uncommon but some women experience pain and stiffness in their joints while taking Arimidex.