Per IRS Publication 17 Your Federal Income Tax (For Individuals), on page 72:
Court awards and damages. To determine if settlement amounts you receive by compromise or judgment must be included in your income, you must consider the item that the settlement replaces. The character of the income as ordinary income or capital gain depends on the nature of the underlying claim. Include the following as ordinary income.
Don’t include in your income compensatory damages for personal physical injury or physical sickness (whether received in a lump sum or installments).
To enter a description and an amount for IRS Schedule 1 (Form 1040) Additional Income and Adjustments to Income, Line 8:
When you print your return, the text "See Attached" will print to the left of Line 8 on Schedule 1 (Form 1040). A sheet titled "Other Income - Supporting Details for Schedule 1 (Form 1040), Line 8" that includes the description and the amount entered will print with the return.
For more information, also see IRS Publication 525 Taxable and Nontaxable Income and IRS Publication 4345 Settlements - Taxability.
Note that any link in the information above is updated each year automatically and will take you to the most recent version of the document at the time it is accessed.