Table 1. Cases of laptop-induced erythema ab igne [1-4, 9, 14-22]

Case

Age (y)

Race

Sex

Duration of exposure

Clinical Appearance

Reference

1

12/C/F

11 months

Extensive violaceous marks on the dorsal surface of both thighs, more intense on the right

[14]

2

17/ NR/F

1 year

Patchy, reticulated mildly erythematous to brownish lesions on the front of thighs, more pronounced on left

[21]

3

18/C/F

NR

8x6 cm area of reticulated, browning, macular pigmentation on the left breast

[16]

4

20/C/F

2 months

Asymptomatic pigmentation in a net-like distribution on the thighs bilaterally

[1]

5

21/AA/F

2 years

Hyperpigmented, reticulated lesions on lower legs more pronounced on the left. The lesions corresponded to the underside and border of her laptop computer

CR

6

25/C/F

6 months

Asymptomatic, reticular pigmentation on the thighs, more pronounced on the left

[17]

7

26/SA/F

2 months

Large, asymptomatic patch of reticulated hyperpigmentation on right anterior thigh

[20]

8

40/C/F

NR

Asymptomatic, reddish-brown, reticulated eruption

[19]

9

48/C/F

NR

Patchy, reticulate pigmentation on thighs with increased pigmentation on the right

[4]

10

9/C/M

NR

Reticular hyperpigmentation on left thigh

[18]

11

12/C/M

Several months

Reticulate pigmented macular dermatosis with telangiectasia on the left thigh

[9]

12

15/C/M

Several months

Livedo reticularis-like eruption on both thighs, more pronounced on the left

[22]

13

21/C/M

3 months

Reticulated, dark reddish-brown pigmented patch with undefined border on left thigh

[15]

14

26/C/M

NR

Reticular and brown pigmentation on anterior aspect of right thigh

[2]

15

50C/M

2 weeks

Well-defined, brown, mildly erythematous, reticulated patch on the anterior left thigh

[3]

 

AA = African American; C = Caucasian; CR = Current Report; F = female; M = male; NR = not reported; SA = South Asian American.