Hello There, Probable causes of this problem may be:- 1) Local Neuritis 2) Muscles Cramps 3) Aggravated Vat Dosha 4) Chronic illness - Infection 5) Allergy - Poor Immunity 6) Weakness - Vitamins deficiency 7) Unhealthy Lifestyle 8) UNHEALTHY FOOD HABITS 9) Over Exertion 10) Late Night working 11) Day sleep 12) Constantly in AC Or Direct Air flow 13) Constipation 14) Acidity-Gas and Gastritis *Rule out all causes. *Consult Privately online-Telephone-Video OR Visit personally for proper management. *Dr Jonwals NAP Therapy Medicines treatment is ultimate solution for this problem *Dr Jonwals NAP Therapy Medicines treatment treats Disease along with its root causes simultaneously and successfully.