Hello dear, The fact that your headache reduces after taking sweets indicate that the headache is of hypoglycemic origin i.e. due to decreased blood sugar level in your body. So, kindly visit your physician & get a proper clinical examination done along with estimation of blood sugar values. The causes of hair loss which needs to be concerned of are: 1. Environmental factors 2. Stress- can also cause headache. 3. Deficiency of certain minerals, vitamins & amino acids in diet. e.g. Iron, zinc, Vit B complex, lysine. 4. Hormonal factors. e.g. Thyroxine 5. Any incidence of surgery, shock, etc. Management includes: 1. Treating the underlying cause 2. Avoidance of stress 3. Dietary modifications 4. Minoxidil solution to be applied locally to stimulate the hair follicles 5. Multivitamin & multi mineral supplementation But these medications have to be used regularly under the guidance of a Dermatologist, as hair loss tends to return on stoppage of these medications. There is no need to worry, you will be fine. Your hairs will grow back again. Wishing you a Good Health. Thanks & take care.