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[43] [failed verification] UVC is the highest-energy, most-dangerous type of ultraviolet radiation, and causes adverse effects that can variously be mutagenic or carcinogenic. [44] Despite the importance of the sun to vitamin D synthesis, it is prudent to limit the exposure of skin to UV radiation from sunlight [45] and from tanning beds. [46]
The location of 'far-UVC' radiation (200-235 nm) in the electromagnetic spectrum. Far-UVC is a type of ultraviolet germicidal irradiation being studied and commercially developed for its combination of pathogen inactivation properties and reduced negative effects on human health when used within exposure guidelines. [1] [2] [3] [4]
While blue light therapy has similar mechanisms for skin enhancement as red light therapy, its usage for photodynamic therapies in treating cancer are slightly different. Blue light therapy stimulates immune system defences, destroys blood vessels that help cancer cells grow, and causes cell death by reacting with oxygen. [ 16 ]
Ultraviolet radiation is thought to cause up to 95% of basal and squamous cell carcinomas, and between 70-95% of melanomas in people with fair skin. “Skin cancer is caused by exposing the cells ...
To date, there is no link between an increase in a patient's risk of skin cancer and the proper use of narrow-band UVB phototherapy. [1] [2] "Proper use" is generally defined as reaching the "Sub-Erythemic Dose" (S.E.D.), the maximum amount of UVB your skin can receive without burning. Certain fungal growths under the toenail can be treated ...
UV-B treatments for skin conditions such as psoriasis, vitiligo, and atopic dermatitis are administered in very low doses, often lasting only a few minutes or less than a minute when using lamps emitting 290-300 nanometer light. This low dosage does not significantly increase the risk of skin cancer, making UV-B phototherapy a safe treatment ...
[66] [67] This is mediated by genetic damage, collagen damage, as well as destruction of vitamin A and vitamin C in the skin and free radical generation. [citation needed] Ultraviolet light is also known to be a factor in formation of cataracts. [68] [69] Ultraviolet radiation exposure is strongly linked to incidence of skin cancer. [70] [66] [71]
This reduces the treatment time, makes the treatment more effective, and enables the use of a weaker psoralen. The physician and physiotherapists can choose a starting dose of UV based on the patient's skin type. The UV dose will be increased in every treatment until the skin starts to respond, normally when it becomes a little bit pink.