salivating a lot

bad breath, blister(s) or bump(s) on face, genital ulcer(s) in females, pain in mouth

Herpes simplex virus 1 and 2 (HSV-1 and HSV-2) are two strains of the Herpes virus family, Herpesviridae, which cause infections in humans. HSV-1 and 2 are also referred to as Human Herpes Virus 1 and 2 (HHV-1 and HHV-2). ... 

difficulty swallowing, pain in mouth, ulcer(s) in mouth

An aphthous ulcer or canker sore is a type of mouth ulcer which presents as a painful open sore inside the mouth caused by a break in the mucous membrane. The condition is also called aphthous stomatitis, also known as "Sutton's Disease", especially if there are multiple or recurring mouth ulcers. ... 

rash, stomach pain, vomiting, weakness

puffy face, stomach pain, upper abdominal pain, vomiting

diarrhea, nausea, stomach pain, vomiting

A foodborne illness, also foodborne disease, as the name suggests, is any illness resulting from the consumption of contaminated food. Although foodborne illness is commonly called food poisoning, this is often a misnomer. True food poisoning occurs when a person ingests a contaminating chemical or a natural toxin, while most cases of foodborne illness are actually food infection caused by a variety of foodborne pathogenic bacteria, viruses, prions or parasites. Such contamination usually arises from improper handling, preparation, or food storage. Good hygiene practices before, during, and after food preparation can reduce the chances of contracting an illness. The action of monitoring food to ensure that it will not cause foodborne illness is known as food safety. Foodborne disease can also be caused by a large variety of toxins that affect the environment. For foodborne illness caused by chemicals, see Food contaminants. ... 

confusion, convulsions, palpitations, passing out

Generalized tonic-clonic seizures (also called grand mal seizures) are the type of seizure that most people associate with the term "seizure," convulsion, or epilepsy. They may occur in people of any age, as a single episode or as a repeated, chronic condition (epilepsy). The majority of seizures that do occur as just a single episode are generalized tonic-clonic seizures rather than other types. ... 

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. ... 

difficulty swallowing, pain in mouth, sore gums or bleeding gums, sore throat

Gingivostomatitis is characterized by inflammation of the gums and mucosa and multiple mouth ulcers. This inflammation results from viral infections, particularly those that cause common childhood illness such as herpes virus (cold sores and acute herpetic stomatitis), Coxsackie viruses (hand, foot and mouth disease and herpangina). ... 

difficulty speaking, difficulty walking, eye pain, high blood pressure

a painful swelling on face, facial pain, lump or swelling on face, puffy face

Parotitis is an inflammation of one or both parotid glands, the major salivary glands located on either side of the face, in humans. The parotid gland is the salivary gland most commonly affected by inflammation. Parotitis is most often caused by a bacterial infection of Staphylococcus aureus, but can result from viral infection, and other causes. The most common viral cause of parotitis is mumps. Blockage of the main parotid duct, or one of its branches, is often a primary cause of acute parotitis, with further inflammation secondary to bacterial superinfection. ...