Hello Narwari, Bilateral prominent broncho vascular markings means either Infection or Inflammation in respiratory passages, Allergy or fluid overload in lungs. But diagnosis is not made only on the basis of X ray findings. It should be co related with symptoms & signs obtained by physical examination. So, it will be better to consult a Pulmonologist. Appropriate management steps will be taken based on complete history, physical examination & co-relating the findings with investigation reports. And make sure that you avoid cold food & drinks, and stay well protected from cold, dust & other allergens. Wish you a good health & speedy recovery. Thanks & take care.