Hello, I can understand your concern. As you are suffering from lot of stress and sleeplessness, it seems that you have developed apthous ulcers on tongue. Numbness could be because of the ulcer pressing over the nerve supplying the tongue. Usually, these ulcers take about a week to heal. However, you can apply Kenacort Gel 1% 3-4 times a day for a week. In addition, you can apply topical Benzocain Gel (Mucopain) over the ulcers, especially before meals to soothe burning and pain while eating. You can also start multivitamin tablets like B-Folcin once a day for about 10 days to help faster healing. Have soft diet and avoid salt and spicy foods. Try to reduce stress in daily life by taking small breaks. You can also try Yoga and Meditation to reduce effects of stress on your body. If the ulcers do not heal in a week, you should visit a dentist for examination of the ulcers and further investigations. I hope this information helps. Thank you for choosing HealthcareMagic. Let me know if you have follow up questions. Best, Dr. Viraj Shah