20 Types of Skin Lesions: Causes and Pictures - Verywell Health Common causes of skin lesions include injury, infections, allergies, and autoimmune disorders They can occur suddenly or be symptomatic of a chronic condition 2 Most skin lesions are benign (not cancer) but they can be symptoms of life-threatening conditions like anaphylaxis
Mouth Ulcers: Types, Causes Treatment - Cleveland Clinic Mouth ulcers are small sores that form on your gums, lips, tongue, inner cheeks or roof of your mouth Lots of different things can cause them, including minor injuries, hormonal changes and emotional stress Many mouth ulcers go away on their own Others may require treatment
Canker sore - Symptoms and causes - Mayo Clinic Canker sores, also called aphthous ulcers, are small, shallow lesions that develop on the soft tissues in your mouth or at the base of your gums Unlike cold sores, canker sores don't occur on the surface of your lips and they aren't contagious
Skin Lesions: Pictures, Causes, Diagnosis, Treatment More Cold sores weep clear yellow fluid before they crust over Blisters may come back due to stress, menstruation, illness, or sun exposure Discover more about the causes, symptoms, and treatments