Blood on Tongue in Morning: Causes from Gum Disease to Medications

Possible causes:

• Gingivitis/periodontitis – bleeding gums mix with saliva.
• Trauma – nocturnal tongue biting.
• Systemic: leukemia, vitamin K deficiency, coagulopathy.
• Medications: anticoagulants, antiplatelets.
• Xerostomia – dry mouth → mucosal fragility.

See a dentist/doctor for persistent bleeding; blood work if systemic cause suspected.