photoaging
Sunlight skin deterioration
Photoaging is the premature aging of skin caused by repeated exposure to ultraviolet radiation, primarily from sunlight.
Unlike chronological aging, which happens naturally over time, photoaging produces distinctive damage including deep wrinkles, leathery texture, dark spots, and loss of elasticity.
Dermatologists use the term to distinguish sun-induced changes from normal aging, since photoaging is largely preventable with sun protection.
Years of tanning left her with significant photoaging on her chest and hands.
UV-blocking skin cream
- SPFUltraviolet defense measure
- broad spectrumCovering many categories
- zinc oxideInorganic UV-blocking compound
- titanium dioxideWhite inorganic pigment compound
protective clothing · UPF · shade · reapplication · antioxidants · sun hat · sunglasses
Structural body protein
- elastinProtein enabling tissue recoil
- fibroblastsCollagen-producing connective tissue cells
- dermisLiving tissue under epidermis
- epidermisOutermost tissue layer
melanin · hyperpigmentation · lentigines · glycation · sallowness · atrophy · roughness · tretinoin
Pigmented marks from aging
- sunspotsDark patches on star
- liver spotsHyperpigmented skin patches
- lentiginesPigmented skin lesions
- frecklesPigmented skin spots
hyperpigmentation · uneven skin tone · melasma · mottling · brown spots
Shallow facial creases
- crow's feetWrinkles at eye corners
- frown linesWrinkles between the eyebrows
- furrowsNarrow plowed channels
- laugh linesFacial creases from smiling
Long-wave ultraviolet
- UVBMedium-wave ultraviolet light
- DNA damageInjury to genetic material
- free radicalsChemically reactive atomic fragments
- immunosuppressionReduced bodily defense activation
Aggressive pigment-cell cancer
- basal cell carcinomaEpidermal malignancy, rarely metastatic
- carcinogenesisMalignant transformation process
- precancerousAbnormal, may become malignant
- skin biopsySurgical tissue sample removal
sunscreen
UV-blocking skin cream
- SPFUltraviolet defense measure
- broad spectrumCovering many categories
- zinc oxideInorganic UV-blocking compound
titanium dioxide · protective clothing · UPF · shade · reapplication · antioxidants · sun hat · sunglasses
collagen
Structural body protein
- elastinProtein enabling tissue recoil
- fibroblastsCollagen-producing connective tissue cells
- dermisLiving tissue under epidermis
epidermis · melanin · hyperpigmentation · lentigines · glycation · sallowness · atrophy · roughness · tretinoin · vitamin C serum
age spots
Pigmented marks from aging
- sunspotsDark patches on star
- liver spotsHyperpigmented skin patches
- lentiginesPigmented skin lesions
freckles · hyperpigmentation · uneven skin tone · melasma · mottling · brown spots
fine lines
Shallow facial creases
- crow's feetWrinkles at eye corners
- frown linesWrinkles between the eyebrows
- furrowsNarrow plowed channels
UVA
Long-wave ultraviolet
- UVBMedium-wave ultraviolet light
- DNA damageInjury to genetic material
- free radicalsChemically reactive atomic fragments
melanoma
Aggressive pigment-cell cancer
- basal cell carcinomaEpidermal malignancy, rarely metastatic
- carcinogenesisMalignant transformation process
- precancerousAbnormal, may become malignant
skin biopsy · tumor suppressor · gene mutation · apoptosis · dysplasia
photo, aging, phototherapy, photosensitive, photobiology, photosensitivity, photodegradation, photodamage, photosensitize