<unk>  is a diagnosis of exclusion, i.e. all other explanations for the symptoms are ruled out before the diagnosis is made. There are no clinically useful investigations that would help to support a diagnosis of<unk>  (by definition all tests would have normal results), but blood tests and / or urinalysis may be useful to rule out anemia, deficiency states, hypothyroidism and diabetes. Investigation of a dry<unk>  symptom may involve sialometry, which objectively determines if there is any reduction of the salivary flow rate (hyposalivation). Oral candidiasis can be tested for with use of a swabs, smears, an oral rinse or saliva samples. It has been suggested that allergy testing (e.g., patch test) is inappropriate in the absence of a clear history and clinical signs in people with a<unk>  sensation in the<unk> . The diagnosis of a people with a<unk>  symptom may also involve psychologic screening e.g. depression questionnaires. The second edition of the International Classification of Headache Disorders lists diagnostic criteria for "Glossodynia and Sore<unk> ": ::A. Pain in the<unk>  present daily and persisting for most of the day, ::B. Oral mucosa is of normal appearance, ::C. Local and systemic diseases have been excluded. Classification A<unk>  sensation in the<unk>  may be primary (i.e.<unk>  or secondary to systemic or local factors. Other sources refer to a "secondary<unk> " with a similar definition, i.e. a<unk>  sensation which is caused by local or systemic factors, or "where oral<unk>  is explained by a clinical abnormality". However this contradicts the accepted definition of<unk>  which specifies that no cause can be identified. "Secondary<unk> " could therefore be considered a misnomer.<unk>  is an example of dysesthesia, or a distortion of sensation. Some consider<unk>  to be a variant of atypical facial pain. More recently,<unk>  has been described as one of the 4 recognizable symptom complexes of chronic facial pain, along with atypical facial pain, temporomandibular joint dysfunction and atypical odontalgia.<unk>  has been subdivided into three general types, with type two being the most common and type three being the least common. Types one and two have unremitting symptoms, whereas type three may show remitting symptoms. * Type 1 - Symptoms not present upon waking, and then increase throughout the day * Type 2 - Symptoms upon waking and through the day * Type 3 - No regular pattern of symptoms Sometimes those terms specific to the tongue (e.g. glossodynia) are reserved for when the<unk>  sensation is located only on the tongue.
Burning mouth syndrome
Oral allergy syndrome
Dermatophagia
Nonallergic rhinitis
Honeymoon rhinitis
Aerosinusitis
Rhinosinusitis
Adenoiditis