The Medical Expense form does not allow me to enter the "type" of expense that I am claiming. Consequently I am unable to enter any expenses. What should I do?

When using TurboTax Standard, click on Find in the top right-hand corner and type medical expenses profile, select it and click go.  Put a checkmark next to Medical receipts - 2018 and click on Continue.  Click on Enter New Medical Expense.  Click on Add medical receipt and you will be able to enter your individual expenses.