Let me tell you about an interesting little know medical condition. I seem to have this syndrome. 
I have very painful, tender sore spots on the roof of my mouth that feel as though I have burnt it, hurt any time I eat or drink.. this is not unusual with Burning mouth syndrome. The rest of my mouth just always hurts. Also a Bad taste always in my mouth...

Burning mouth syndrome

Symptoms

* A burning sensation that may affect your tongue, lips, gums, palate, throat or whole mouth
* A tingling or numb sensation in your mouth or on the tip of your tongue
* Mouth pain that worsens as the day progresses
* A sensation of dry mouth
* Increased thirst
* Sore mouth
* Loss of taste
* Taste changes, such as a bitter or metallic taste
When to see a doctor
If you have pain or soreness of your tongue, lips, gums or other areas of your mouth.

Causes

* Dry mouth (xerostomia), which can be caused by various medications or health problems.* Other oral conditions, such as oral yeast infection (thrush), oral lichen planus and geographic tongue.
* Psychological factors, such as anxiety, depression or excessive health worries.
* Nutritional deficiencies, such as lack of iron, zinc, folate (vitamin B-9), thiamin (vitamin B-1), riboflavin (vitamin B-2), pyridoxine (vitamin B-6) and cobalamin (vitamin B-12).
* Dentures. Dentures can place stress on some of the muscles and tissues of your mouth, causing mouth pain. The materials used in dentures also can irritate the tissues in your mouth.
* Nerve damage to nerves that control taste and pain in the tongue.
* Allergies or reactions to foods, food flavorings, other food additives, fragrances, dyes or other substances.
* Reflux of stomach acid (gastroesophageal reflux disease) that enters your mouth from your upper gastrointestinal tract.
* Certain medications, particularly high blood pressure medications called angiotensin-converting enzyme (ACE) inhibitors.
* Oral habits, such as tongue thrusting and teeth grinding (bruxism).
* Endocrine disorders, such as diabetes and underactive thyroid (hypothyroidism).
* Hormonal imbalances, such as those associated with menopause.
* Excessive mouth irritation, which may result from overbrushing of your tongue, overuse of mouthwashes or having too many acidic drinks.

Complications

* Difficulty sleeping
* Irritability
* Depression
* Anxiety
* Difficulty eating
* Decreased socializing

Treatments and drugs

There's no one sure way to treat burning mouth syndrome, and solid research on the most effective methods is lacking. Treatment depends on your particular signs and symptoms, as well as any underlying conditions that may be causing your mouth pain. That's why it's important to try to pinpoint what's causing your burning mouth pain. Once any underlying causes are treated, your burning mouth syndrome symptoms should get better.

If a cause can't be found, treatment can be challenging. There's no known cure for primary burning mouth syndrome. You may need to try several treatment methods before finding one or a combination that is helpful in reducing your mouth pain. Treatment options may include:

* A lozenge-type form of the anticonvulsant medication clonazepam (Klonopin)
* Alpha-lipoic acid, a strong antioxidant produced naturally by the body
* Oral thrush medications
* Certain antidepressants
* B vitamins
* Cognitive behavioral therapy
* Special oral rinses or mouth washes
* Saliva replacement products
* Capsaicin, a pain reliever that comes from chili peppers

I wish I knew how they were going to treat this..
right now i have a special mouth wash..thats it.