Bad breath OR foul breath is  also called halitosis. It is the catarrhal condition of the nose and throat. unclean or diseased teeth and gums.Certain  foods like onions or garlic, alcohol,smoking is the reason.

SYMPTOMS OF BAD BREATH

• Unpleasant odor from mouth
• Changing taste in the mouth
• Dry mouth
• White coating on the tongue.
• Constipation
• Thick saliva.e.t.c

CAUSES OF BAD BREATH

Most bad breath starts in  mouth, and there are many possible causes. They include:

• Food-The breakdown of food particles in and around teeth can increase bacteria and cause a foul odor. Eating certain foods, such as onions, garlic and spices, also can cause bad breath. After  digestion, they enter in bloodstream, are carried to  lungs and affect  breath.
• Tobacco products- Smoking causes its own unpleasant mouth odor. Smokers and oral tobacco users are also more likely to have gum disease, another source of bad breath.
• Poor dental hygiene - If we donot brush and floss daily, food particles remain in our mouth, causing bad breath. A colorless, sticky film of bacteria (plaque) forms on our teeth. If not brushed away, plaque can irritate our gums and eventually form plaque-filled pockets between our teeth and gums (periodontitis). Our tongue also can trap bacteria that produce odors. Dentures that are not cleaned regularly or do not fit properly can harbor odor-causing bacteria and food particles.
• Dry mouth-Saliva helps cleanse our mouth, removing particles that cause bad odors. A condition called dry mouth can contribute to bad breath because production of saliva is decreased. Dry mouth naturally occurs during sleep, leading to "morning breath," and it worsens if we sleep with our mouth open. Chronic dry mouth can be caused by a problem with our salivary glands and some diseases.
• Medications- Some medications can indirectly produce bad breath by contributing to dry mouth. Others can be broken down in the body to release chemicals that can be carried on  breath.
• Infections - Bad breath can be caused by surgical wounds after oral surgery, such as tooth removal, or as a result of tooth decay, gum disease or mouth sores.
• Other mouth, nose and throat conditions- Bad breath can occasionally stem from small stones that form in the tonsils and are covered with bacteria that produce odor. Infections or chronic inflammation in the nose, sinuses or throat, which can contribute to postnasal drip, also can cause bad breath.
• Other causes-Diseases, such as some cancers, and conditions such as metabolic disorders, can cause a distinctive breath odor as a result of chemicals they produce. Chronic reflux of stomach acids (gastroesophageal reflux disease, or GERD) can be associated with bad breath. Bad breath in young children can be caused by a foreign body, such as a piece of food, lodged in a nostril.

HOMOEOPATRHIC TREATMENT FOR BAD BREATH