Term
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Definition
- Germicidal
- Blocked by ozone
- Highest energy causing DNA damage (carcinogenic), potentially lethal
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Term
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Definition
- Causes sunburn, skin cancer, photoaging, photosensitivity, vit D synthesis
- Used for phototherapy in psoriasis & vitiligo (immunosuppressive)
- Blocked by clear glass in home & car windows
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Term
UVA (320-400nm)
UVA2 (320-340)
UVA1 (340-400)
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Definition
- Causes immediate pigment darkening, drug photosensitivity, photo-allergy, photoaging, skin cancer, responsible for porphyria cutanea tarta
- Used in PUVA for cutaneous T-cell lymphoma, psoriasis, alopecia totalis
- Passes through clear glass
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Term
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Definition
Latitude: closer to equator = more direct UV exposure
Atmosphere conditions: cloudy days may only reduce UV by 20%
Time of day: sun is strongest btwn 10:00-4:00
Reflection: 80% of suns rays are reflected by surfaces: Snow, Sand, Water, pavement
Humidity: wet stratum corneum transmits more UVB
Seasonal: Maximal day is summer solstice=June 21st (minimum = Dec 21st)
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Term
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Definition
Polymorphous Light Eruption |
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Definition
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Definition
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Term
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Definition
Chronic Actinic Dermatitis |
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Definition
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Definition
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Definition
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Term
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Definition
Rosacea
(sun sensitivity) |
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Definition
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