Hello dear, The symptoms as mentioned in your post can be due to: 1. Any pathology in the Vestibular apparatus in the inner ear, which maintains posture & balance. 2. Any fluctuation in the blood pressure or blood sugar levels. 3. Inadequate hydration status & electrolyte balance of the body. 4. Deficiencies of certain nutrients like Iron, Vitamin B 12, Folic acid, etc. which helps in blood formation & nerve conduction. 5. Hormonal & metabolic causes. 6. Stress, inadequate sleep, etc. So, kindly consult your Physician and discuss regarding this. Investigations like complete blood count, estimation of blood pressure & blood sugar levels, CT scan of brain will be helpful to rule out any pathological cause for the symptoms. And it is also needed that certain precautions regarding diet & lifestyle should be taken, such as: 1. Take soft, plain, non-spicy foods 2. Drink lots of water to maintain adequate hydration 3. Avoid fast food. 4. Avoid smoking & alcohol. 5. Keep away stress..think positive. 6. Exercise regularly & practice meditation. Wishing your brother a Good Health. Thanks & take care.