| lichen scrofulosorum | Small asymptomatic lichen papules on the trunk of children with tuberculosis; acid-fast bacilli are not seen in the dermal granulomas. Synonym: acne scrofulosorum, papular scrofuloderma, papular tuberculid. (05 Mar 2000) |
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| lichen simplex chronicus | A thickened area of itching skin resulting from rubbing and scratching. (05 Mar 2000) |
| lichen spinulosus | Eruption of conical papules, of unknown cause, which have an adherent scaly surface; may be related to lichen planus. (05 Mar 2000) |
| lichen striatus | A self-limited papular eruption occurring primarily in children (more commonly in females); the lesions are arranged in linear groups and usually occur on one extremity. (05 Mar 2000) |
| lichen strophulosus | An eruption of papules and vesicles at the orifices of sweat glands, accompanied by redness and inflammatory reaction of the skin. Synonym: heat rash, lichen infantum, lichen strophulosus, prickly heat, strophulus, summer rash, tropical lichen, lichen tropicus, wildfire rash. (05 Mar 2000) |
| lichen syphiliticus | Secondary eruption of small follicular papules, usually appearing as groups of lesions. Synonym: acuminate papular syphilid, lichen syphiliticus, miliary papular syphilid. (05 Mar 2000) |
| lichen tropicus | An eruption of papules and vesicles at the orifices of sweat glands, accompanied by redness and inflammatory reaction of the skin. Synonym: heat rash, lichen infantum, lichen strophulosus, prickly heat, strophulus, summer rash, tropical lichen, lichen tropicus, wildfire rash. (05 Mar 2000) |
| lichen urticatus | A sensitivity reaction to insect bites, especially human and pet fleas, seen mostly in young children as wheals followed by papules on exposed areas. Synonym: lichen urticatus, prurigo infantilis, urticaria papulosa. (05 Mar 2000) |