Although it is rare for a woman to have menopause before age 40, it can happen anytime between the ages of 30 and the mid-50s, and even later. Often, the onset of menopause is earlier for smokers than for nonsmokers. Only a few generations ago, few women lived beyond menopause.
Itching can be caused by many conditions. A common cause of itch is psychological, that is, due to stress, anxiety, etc. Stress also can aggravate itch from other causes. Dry skin (xerosis) is another frequent cause of itch. Many people also report sunburn itch following prolonged exposure to UV radiation from the sun.
Itching skin from caffeine sensitivity is most likely caused by an allergic reaction in the body. There's a difference between being sensitive to caffeinated beverages and foods and having an allergy. Itching skin is a sign of an allergic reaction caused by increased histamine levels in the skin. If you notice that your skin becomes inflamed, itchy and irritated after consuming caffeine, make an appointment with an allergist for testing and a clinical diagnosis.