Flat Spots - if you run your finger over the, the lesion is flat. If a flat spot is small ( 1 cm) , it is a macule, if a flat spot is larger( > 1 cm) , it is a
patch
Macules (flat, small) Classic Description Diagnosis
Multiple 3 to 8mm erythematous confluent Morbilliform drug eruption
round macules on chest, back, and arms
Multiple 2 to 5mm hyperpigmented, Tinea Versicolor
hyperpigmented, or tan round to Oval
macules on upper neck and back, upper chest,
and arms with slight inducible scaling or
scraping
Multiple scattered 2 to 4mm round Oval Benign Melanocytic Nevi
brown macules, symmetrically pigmented, on
back and chest with reticular pattern on
dermoscopy
, solitary 6mm dark brown round symmetric Benign Melanocytic Nevus
macula and upper back
Solitary dark brown, blue Gray, and red 7mm Malignant Melanoma
macula with irregular borders and finger like
projections of pigment, on right forearm
Patches ( flat, large) Classic Description Diagnosis
Bilaterally symmetric erythemas patches on Seborrheic Dermatitis
central cheeks and eyebrows, some with
overlying greasy scales
patch
Macules (flat, small) Classic Description Diagnosis
Multiple 3 to 8mm erythematous confluent Morbilliform drug eruption
round macules on chest, back, and arms
Multiple 2 to 5mm hyperpigmented, Tinea Versicolor
hyperpigmented, or tan round to Oval
macules on upper neck and back, upper chest,
and arms with slight inducible scaling or
scraping
Multiple scattered 2 to 4mm round Oval Benign Melanocytic Nevi
brown macules, symmetrically pigmented, on
back and chest with reticular pattern on
dermoscopy
, solitary 6mm dark brown round symmetric Benign Melanocytic Nevus
macula and upper back
Solitary dark brown, blue Gray, and red 7mm Malignant Melanoma
macula with irregular borders and finger like
projections of pigment, on right forearm
Patches ( flat, large) Classic Description Diagnosis
Bilaterally symmetric erythemas patches on Seborrheic Dermatitis
central cheeks and eyebrows, some with
overlying greasy scales
