levodopa造成的髮色變深,也許是因為補充了黑色素的原料
1. levopoda使用一年之後,從白髮變成灰色[^1]
2.免疫抑制使髮色變深
pazopanib服用兩個月後長出黑髮
32歲女性因肉瘤服用pazopanib長出黑髮[^2]
thalidomide治療三年75歲的多發性骨髓瘤患者[^3]
其他相關藥物[^4]
[[PD-1抑制劑]]或是[[PD-L1抑制劑]]
患者治療肺癌的過程中髮色逐漸變黑[^5]
可能是因為調節免疫系統,抑制發炎反應。
3.壓力與頭髮的關係
頭髮會顯示生活中的壓力情況[^6]
壓力增加的時候會讓頭髮中的黑色素減少,壓力解除之後顏色恢復
這種情況也許也跟粒線體有關係,由於粒線體會針對人體遇到的外接情況作出反應,所以當粒線體受損時會呈現皮膚老化皺摺,毛髮顏色變白與減少的現象[^7]
不過詳細的調控機轉還有調控臨界點目前仍然在研究中,所以並不是只要有白頭髮或是落髮的時候移除壓力源就會達到逆轉的效果。
# 參考資料
[^1]: Darkening of white hair following levodopa therapy in a patient with Parkinson's disease。 - PMID: **24166898** - DOI: [10.1002/mds.25696](https://doi.org/10.1002/mds.25696)
[^2]: Reversible hair depigmentation in a Japanese female treated with pazopanib。- PMID: **25346306**- DOI: [10.1111/1346-8138.12654](https://doi.org/10.1111/1346-8138.12654)
[^3]: Hair repigmentation associated with thalidomide use for the treatment of multiple myeloma。 - PMCID: [PMC4964225](http://www.ncbi.nlm.nih.gov/pmc/articles/pmc4964225/)- DOI: [10.1136/bcr-2016-215521](https://doi.org/10.1136/bcr-2016-215521)
[^4]: Drug-induced hair colour changes。- PMID: **27545142**- DOI: [10.1684/ejd.2016.2844](https://doi.org/10.1684/ejd.2016.2844)
[^5]: Hair Repigmentation During Immunotherapy Treatment With an Anti-Programmed Cell Death 1 and Anti-Programmed Cell Death Ligand 1 Agent for Lung Cancer - PMCID: [PMC5817444](http://www.ncbi.nlm.nih.gov/pmc/articles/pmc5817444/) - DOI: [10.1001/jamadermatol.2017.2106](https://doi.org/10.1001/jamadermatol.2017.2106)
[^6]: Quantitative mapping of human hair greying and reversal in relation to life stress。 - PMCID: [PMC8219384](http://www.ncbi.nlm.nih.gov/pmc/articles/pmc8219384/) - DOI: [10.7554/eLife.67437](https://doi.org/10.7554/elife.67437)
[^7]: Reversing wrinkled skin and hair loss in mice by restoring mitochondrial function。 - PMCID: [PMC6053453](http://www.ncbi.nlm.nih.gov/pmc/articles/pmc6053453/) - DOI: [10.1038/s41419-018-0765-9](https://doi.org/10.1038/s41419-018-0765-9)