Erythema can indicate you have inflammation, infections, allergic reactions, sunburn, trauma or the erythema can also be caused by certain medications.
Erythema is the medical term for redness of the skin.
Erythema or redness of the skin occurs when your blood vessels in your skin dilate, which causes an increase in blood flow and results in a red appearance.
The redness of the skin also called erythema can be caused by a variety of factors and can present itself as a localized area of skin redness or even as a widespread rash on your skin.
The Erythema can also appear as an annular or ring shaped, target like, or nodular or raised bumps or lesions.
Most cases of erythema are harmless and go away on their own.
In some cases erythema can be a sign of an underlying health condition which requires treatment.
The most severe form of erythema is erythema multiforme and can be life threatening because erythema multiforme causes large areas of the skin to blister and peel.
Erythema multiforme affects your mucus membranes in your mouth, eyes and genitals and people with erythema multiforme often have systemic symptoms like joint pain or fevers as well.