Need more history, if you have problem with cashew then don't take cashew.
Next Steps
consult on app for Dr
Health Tips
apply fresh white butter in oral cavity it will help you.
avoid spicy, hot, fast food and, bakery products, smoking and alcohol.
take plenty of water.
eat fruits and vegetables and nutritious diet so that you control for constipation it will prevent you from acidity and rashes in oral cavity.