difficulty swallowing, poor appetite, sore gums or bleeding gums, sore throat

Stomatitis is an inflammation of the mucous lining of any of the structures in the mouth, which may involve the cheeks, gums, tongue, lips, and roof or floor of the mouth. The inflammation can be caused by conditions in the mouth itself, such as poor oral hygiene, poorly fitted dentures, or from mouth burns from hot food or drinks, or by conditions that affect the entire body, such as medications, allergic reactions, or infections. A form of stomatitis known as stomatitis nicotina can be caused by smoking cigars, cigarettes, and pipes, and is characterized by small red bumps on the roof of the mouth. ... 

pain in mouth, pain in tongue

Glossitis is inflammation or infection of the tongue. It causes the tongue to swell and change color. Finger-like projections on the surface of the tongue (papillae) may be lost, causing the tongue to appear smooth. ... 

a painful swelling in neck, a painful swelling on face, irritability, lump or swelling on face

Sialadenitis is inflammation of a salivary gland. It may be subdivided temporally into acute, chronic and recurrent forms. ... 

dizziness, heavy menstrual periods, paleness, weakness

Iron deficiency anemia is the most common type of anemia, and the most common cause of microcytic anaemia. ... 

pain in mouth, rash, red tongue, scalp hair loss

Riboflavin (E101), also known as vitamin B2, is an easily absorbed micronutrient with a key role in maintaining health in animals. It is the central component of the cofactors FAD and FMN, and is therefore required by all flavoproteins. As such, vitamin B2 is required for a wide variety of cellular processes. Like the other B vitamins, it plays a key role in energy metabolism, and is required for the metabolism of fats, carbohydrates, and proteins. ... 

a painful swelling on face, jaw pain, lump or swelling on jaw, salivating a lot

Sialolithiasis is most commonly found in the submandibular gland. Stone formation in salivary glands. It is frequently associated with chronic infection of the glands. Treatment includes having patient suck on something sour to promote stone expulsion through increased salivation. ... 

bleeding from mouth, difficulty chewing, difficulty speaking, injury mouth

facial pain, jaw pain, pain in mouth, pain in tongue

bad breath, difficulty speaking, difficulty swallowing, pain in mouth

Oral or mouth cancer most commonly involves the tissue of the lips or the tongue. It may also occur on the floor of the mouth, cheek lining, gingiva (gums), or palate (roof of the mouth). Most oral cancers look very similar under the microscope and are called squamous cell carcinomas. These are malignant and tend to spread rapidly. ... 

difficulty walking, impaired sensations in foot (feet), paleness, weakness

Megaloblastic anemia is an anemia (of macrocytic classification) which results from a deficiency of vitamin B12 and folic acid. ...