###Human: Why is there a fall in platelet count after dengue fever? ###Assistant: Hi. In dengue, platelet count usually falls after having a fever. So keep on monitoring the platelet count, and if it goes below 1 lakh, then it requires an admission. Never take any painkillers other than Paracetamol. Take antacid like Pantoprazole to avoid having a gastrointestinal bleed. Avoid doing heavy activities, and do not strain during passing stools and micturition. If the platelet count becomes low, then avoid doing brushing as well as using mouthwash. Drink plenty of water up to three to four liters. Go to the hospital immediately if there is shortness of breath, and bleeding because even normal platelet count causes a bleed due to platelet dysfunction.