Olfactory disorder
Smell disorder or dysosmia is the generic term for various disorders of olfactory perception . Smell disorders caused by damage to higher processing centers are referred to as central dysosmia .
Quantitative odor disorders
- Anosmia , the complete loss of smell
- Hyposmia , a decreased sense of smell
- Hyperosmia , an oversensitivity to olfactory stimuli
Qualitative odor disorders
- Parosmia , an altered perception of smells
- Phantosmia , a perception of non-existent smells
- Odor agnosia (or agnosia in general ), odors cannot be assigned
- Heterosmia , smells cannot be distinguished
- Cocosmia , pleasant smells are perceived as unpleasant
- Euosmia , unpleasant smells are perceived as pleasant
- Pseudoosmia , one smell is reinterpreted into another under affects