You may be getting that message because your medical deductions must exceed 7.5% of your adjusted gross income to deduct as an itemized deduction. Refer to the TurboTax article The Ultimate Medical Expense Deductions Checklist, and Are Medical Expenses Tax Deductible? for more information.
And as BillM223 states, your itemized deductions must exceed your Standard Deduction to affect your taxes.
Please review the TurboTax article Standard Deduction vs. Itemized Deductions: Which Is Better? to find out if you may be able to claim itemized deductions.
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