What might a painful pea-sized lump in my upper lip be?

A painful lump in the upper lip can arise from several causes:

• Sialolithiasis (Salivary Gland Stone): This condition occurs when a stone forms in a salivary gland, leading to pain and swelling. The lump might feel firm and can be painful, especially during eating when the gland tries to produce saliva.
• Benign Tumors: Conditions like glomangioma or angiomyoama can present as painful lumps in the lip area. Glomangioma is a rare vascular tumor that can cause discomfort, while angiomyoama is another benign growth associated with pain.
• Other Conditions: There are various other possibilities, including infections, cysts, or even inflammation of the tissues in the lip.

If you notice a painful lump in your lip, you can use Ubie's free symptom checker to help identify potential causes based on your specific symptoms, but it's important to consult with a healthcare professional for an accurate diagnosis and appropriate treatment. They may perform an examination and possibly imaging studies to determine the exact cause of the lump.