To rapidly increase platelet count in dengue, focus on a nutrient-rich diet. Include foods high in vitamin C like citrus fruits, kiwi, and strawberries, which help strengthen the immune system. Papaya leaf juice is renowned for boosting platelet count. Iron-rich foods such as spinach and red meat can also be beneficial. Additionally, staying hydrated and getting plenty of rest supports overall recovery and platelet production. Always consult a healthcare professional before starting any new treatment.