内科のメモ帳

上気道感染
- bronchitis, sinusitis, rhinitis
頭部外傷
- Some head injuries can damage the olfactory bulbs in the brain
喫煙（chemical smokeを含む）
- Smokers often experience cacosmia and other smell disorders.
- This is believed to be due to direct injury to the OSN.
- The damage can be short term or long term.
- The longer and more frequently these cells are exposed to the toxins in cigarettes, the worse the damage over time appears to be.
薬剤性（抗がん剤含む）
- 典型的なのは長期的な抗菌薬
頭頚部の放射線治療歴
副鼻腔腫瘍
神経疾患
- アルツハイマー型認知症やパーキンソン病でまれに起きる
- 頭蓋底部脳腫瘍