Give her what she wants. It is all well and good knowing your IFs from your I3s, but if you don't buy her the right type of engagement ring, all is lost. Perhaps the most important piece of advice is never to surprise her with a diamond ring, and not to buy something according to your own taste.
formication in Medicine. formication forÂ·miÂ·caÂ·tion (fÃ´r'mÄ­-kÄ'shÉn) n. An abnormal sensation as of insects running over or into the skin, associated with cocaine intoxication or disease of the spinal cord and peripheral nerves.
Causes of formication include normal states such as onset of menopause (i.e. hormone withdrawal). Other causes are medical conditions such as pesticide exposure, mercury poisoning, diabetic neuropathy, skin cancer, syphilis, Lyme disease or herpes zoster (shingles).