The way SPF is calculated is based on MED, which stands for minimal erythema dose.
From the latimes.com
Dietary tomato paste protects against ultraviolet light-induced erythema in humans.
From the orlandosentinel.com
Immune complications include acute glomerulonephritis, rheumatic fever and erythema nodosum.
From the en.wikipedia.org
Effect of topical antioxidants on UV-induced erythema formation when administered after exposure.
From the orlandosentinel.com
Erythema nodosum is far more common in men than in women and in Caucasians than in other races.
From the en.wikipedia.org
Severe photosensitivity with erythema, swelling and blistering.
From the en.wikipedia.org
Carotenoids and carotenoids plus vitamin E protect against ultraviolet light-induced erythema in humans.
From the orlandosentinel.com
Erythema toxicum can be seen in up to half of all newborns.
From the dailyherald.com
An example of such a test is the inspection for erythema chronicum migrans to diagnose lyme disease.
From the en.wikipedia.org
More examples
Abnormal redness of the skin resulting from dilation of blood vessels (as in sunburn or inflammation)
(erythematous) relating to or characterized by erythema
*Not to be confused with Arrythmia
(Erythematous) The lining of the colon in mild ulcerative colitis, which is redder than normal without the delicate pattern of blood vessels.
Red patches on the skin. Erythema of the skin may be a sign of underlying infection or inflammation. Chemotherapy injections may also cause erythema of the skin. This usually disappears within several hours. ...
Redness of the skin produced by congestion of the capillaries.
The potential biological effect of UV-B measured as the minimum amount of exposure required to produce a perceptible reddening of the skin.
The redness produced during inflammation due to erythrocytes entering tissue spaces.
Abnormal redness of the skin. Erythema might develop around a TST site, but it should not be read as part of the TST result.