What Can Cause A Bump On The Lip?

What can cause a bump on the lip — and when should it be medically assessed?A bump on the lip can result from cold sores (herpes simplex virus), mucoceles, allergic reactions, blocked glands, trauma, or less commonly, precancerous changes. In this episode, we explain the most common causes of lip lesions and how doctors assess them across Europe.You’ll learn:• The difference between fluid-filled blisters (cold sores) and painless mucus cysts (mucoceles)• How lip trauma, biting, or irritation can lead to localised swelling• Signs of bacterial infection versus viral lesions• When a lip bump may indicate angular cheilitis or contact dermatitis• Red flag features: persistent ulceration, bleeding, rapid growth, colour change, or unexplained weight loss• When antiviral treatment, topical medication, or referral may be considered after medical review• Situations where prescription requests may be declined if symptoms suggest a condition requiring in-person examinationWe also clarify how long common lip bumps typically last and when follow-up is recommended.This episode supports our full clinical guide:What Can Cause A Bump On The Lip?https://www.mobidoctor.eu/blog/what-can-cause-a-bump-on-the-lipMobi Doctor provides online medical consultations across Europe. Assessment and treatment decisions are based on individual evaluation and established clinical criteria.