Table I.

Pediatric psoriasis cohort characteristics

Pt	Sex/Age,* years	Initial psoriasis type	Type at time of biopsy	Age at time of biopsy, years	Site of biopsy	Areas of involvement	Severity at time of biopsy	Severity at worst	Prior systemic therapy	Prior photo-therapy	Comorbidities	Family history of psoriasis
1	M/10	Plaque	Plaque	12	Scalp	Head, neck	Mild	Mild	No	No	None	Yes
2	M/4	Plaque	Plaque	12	Scalp	Head, neck, extremities, trunk	Mild	Severe	Yes	Yes	None	Yes
3	F/1	Plaque	Plaque	11	R elbow	Head, neck, extremities, trunk, palms, anogenital, nails	Mild	Severe	No	No	None	No
4	M/10	Guttate	Plaque	11	Lower R leg	Head, neck, extremities, trunk	Moderate	Moderate	No	No	Joint pain	Yes
5	M/1	Plaque	Plaque	7	Leg	Head, neck, extremities, anogenital, nails	Mild	Moderate	No	No	None	No
6	M/15	Guttate	Plaque	17	Trunk	Head, neck, extremities, trunk, anogenital	Moderate	Moderate	No	Yes	None	Yes
7	M/17	Guttate	Plaque	19	Trunk	Head, neck, extremities, trunk, anogenital	Mild	Mild	No	No	None	Yes
8	M/4	Plaque	Plaque	11	R lower back	Head, neck, extremities, trunk, anogenital, soles	Very severe	Very severe	No	Yes	None	Yes
9	F/8	Plaque	Plaque	17	Scalp and abdomen	Head, neck, extremities, trunk, anogenital	Mild	Moderate	No	No	None	No
10	M/2	Guttate	Plaque	4	R arm	Head, neck, extremities, trunk, anogenital	Mild	Mild	No	No	None	Yes

Areas of involvement include extremities (arms, elbows, legs, and knees) and trunk (abdomen, flanks, and back).

Psoriasis severity is classified as mild (<10% BSA), moderate (10%–20% BSA), severe (>20% BSA), and very severe (>50% BSA).

Patients were classified as having a family history of psoriasis if they had a first-degree or second-degree relative with psoriasis.

BSA, Body surface area; F, female; L, left; M, male; Pt, patient; R, right.

^*Age at diagnosis.