Aphthous stomatitis can be one or a cluster of small pits or ulcers in the cheeks, gums, the inside of the lips, or on the tongue. Itâs more common in young people, most often between 10 and 19 years of age. Aphthous stomatitis is not caused by a virus and is not contagious.
If you prefer to reach the IRS via phone: Hours of Operation: Monday â Friday 7:00am â 10:00pm EST. If you believe you may have been the victim of identity theft: 1 (800) 908-4490. Hours of Operation: Monday â Friday 8:00am â 8:00pm EST.
Businesses can contact the Internal Revenue Service on its Telephone Assistance for Businesses at 800-829-4933. The phone line's hours of operation are Monday to Friday, 7:00 a.m. to 7:00 p.m local time. People who believe they may be a victim of identity theft can call 800-908-4490 for automated and live assistance.  A separate phone number exists for Exempt Organizations, Retirement Plan Administrators, and Government Entities: 877-829-5500. The phone line's hours of operation are Monday to Friday, 8:00 a.m. to 5:00 p.m local time. People with hearing impairments can call 800-829-4059 (TDD).