Aphthous Ulcers or Canker Sores
These are small, painful ulcers on the inside of the mouth, lips or throat that occur due to eating very spicy or hot food, vitamin deficiencies, hormones, stress, etc.
It is an infection caused by Epstein-Barr virus producing flu-like symptoms along with the lesions inside the mouth.
This disease spreads most easily through saliva and therefore the lesions are referred to as 'kissing lesions'.
It is a rare, potentially life threatening disorder in which the skin and mucous membranes react severely to a medication or an injection.
Usually, it begins with flu-like symptoms followed by a painful red or purplish rash.
It starts as a red sore that ruptures, oozes and then forms a honey-colored crust usually occurring around the nose and mouth in children.
Hand, Foot and Mouth Disease (HFMD):
It is caused by the Coxsackie viruses leading the flu-like symptoms followed by rash and small blisters that ulcerate.
These lesions are usually seen on the palms of hands, soles of feet, and in the mouth.