<unk>  <unk>  is a<unk> , tingling or scalding sensation in the<unk> , lasting for at least four to six<unk> s, with no underlying known dental or medical cause. No related signs of disease are found in the<unk> . People with<unk>  may also have a subjective xerostomia (dry<unk>  sensation where no cause can be found such as reduced salivary flow), paraesthesia (altered sensation such as tingling in the<unk> , or an altered sense of taste or smell. A<unk>  sensation in the<unk>  can be a symptom of another disease when local or systemic factors are found to be implicated; this is not considered to be<unk> , which is a<unk>  of medically unexplained symptoms. The International Association for the Study of Pain defines<unk>  as "a distinctive nosological entity characterized by unremitting oral<unk>  or similar pain in the absence of detectable mucosal changes" and<unk>  pain in the tongue or other oral mucous membranes", and the International Headache Society defines it as "an intra-oral<unk>  sensation for which no medical or dental cause can be found". To ensure the correct diagnosis of<unk> , Research Diagnostic Criteria (RDC/BMS) have been developed. Insufficient evidence leaves it unclear if effective treatments exist.
Burning mouth syndrome
Oral allergy syndrome
Dermatophagia
Nonallergic rhinitis
Honeymoon rhinitis
Aerosinusitis
Rhinosinusitis
Adenoiditis