Hi, Anxiety and stress have the strong link with a headache which is often called as a tension or a cluster headache. It can also lead to a migraine. This occurs because of hormonal and pressure changes in blood brought by stressful events. Dizziness occurs due to a headache and pressure changes in the blood. In order to avoid this, she needs non-drug therapy as well as drug therapy. It is better to show her to a good psychiatrist or psychological counsellor. As soon as her stress and anxiety end she will feel better. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Soheel Hussain Zargar, Dentist