Nothing to worry about I want your detailed history..  I don't want to treat you blindly without knowing the cause of the problem. I will try my best to treat you. Some questions I might ask that will give me little idea about your history Then I will write prescription  safe and well appreciated by my patients having similar complains    please givme a feedback ASAP.

Dear , there are lots of reason behind headache . Common reason normal cough cold can lead to headache , sinus infection ,migraine , clotting in brain ,bleeding brain, raised blood pressure  , stress , hunger , lots of physiological response ,many more .... So without examination and detailed history can't comment whats the exact reason . Consult doctor  If u want alternative medicine then can consult any ayurvedic physician too.

Check Blood pressure first. Headache may be due to acidity as well. After then if BP is normal & no hyperacidity..then u have to do nasya karm  .daily.. Internal medicines like godanti bhasm,pathyadi kashay are very helpful.it will reduce ur complaint immediately

HOMOEOPATHIC medicines can permanently cure this problem of yours wife rapidly effectively and efficiently without any side effects

I would advise you to meet an ENT doctor so that she can be assessed and undergo further investigations to find the underlying cause of the problem. There are multiple causes for the headache, so she will require further investigations to find the underlying cause of the problem.

Usually headache at the back of head is stress related but could be Migraine also. I strongly suggest you to consult her a Homeopathic physician as there are excellent medicines in Homeopathy for such issues. I have personally helped many patients with headaches.