Blister on lip not cold sore reddit

A lip blister can reflect trauma, a blocked minor salivary gland, irritation, or infection, so appearance alone cannot identify the cause.

The relevant dental structures and mechanisms determine the likely explanation. A clinical history and examination separate similar-looking problems. For a lip blister, the inner or outer location and any preceding bite are useful clues.

Write down the timing and triggers, keep the area clean, and avoid known irritants. Follow product directions and do not place unprescribed substances on oral tissue. For a lip blister, the inner or outer location and any preceding bite are useful clues.

Arrange an examination for persistent, worsening, recurrent, painful, swollen, bleeding, or function-limiting symptoms. Breathing or swallowing difficulty needs urgent care. For a lip blister, the inner or outer location and any preceding bite are useful clues.

Ask which anatomy is involved, what examination or imaging is needed, what treatment is appropriate, and which changes should prompt review. For a lip blister, the inner or outer location and any preceding bite are useful clues.