History
A 40-year-old woman presented with a peculiarly unilateral very well demarcated red scaly psoriatic plaque confined to the extensor surface of one knee of three years duration with no other site involvement.
Strawberry nevus
History
A 6-month-old female infant presented with a dark-red asymptomatic vascular nodule involving the area above the inner canthus of the right eye since birth.
Monelithrix
History
Monilethrix is a congenital hair shaft defect in which the hair shafts have alternate swellings (nodes) and constrictions, producing beaded effect. The hair usually is normal at birth, but in the first months hairs begin to break off 1–2 centimeters above the surface. It is often associated with keratosis pilaris and nail changes; rarely dental anomalies and juvenile cataracts. Spontaneous improvement in puberty or pregnancy sometimes occurs.
Port-wine stain
History
A middle-aged woman presented with vascular swelling of the lower half of the face with marked involvement of the lower lip since birth. No other cutaneous or systemic findings.
Tinea corporis
History
A teenager male presented with an itchy, active, circinate plaque studded with papules, vesicles and some pustules of one month duration on the dorsal surface of the wrist. The patient gave history of contact with domestic animals (birds) which may be the source of infection.
Tinea faciei
History
A 17-year-old wrestler presented with an oval red patch with a scaly erythematous margin and clear hypopigmented center. The patient described a relatively slow peripheral extension of the lesion over a period of three months. The patient gave history of contact during training matches with another wrestler who has had similar lesions on the face. Scraping of scales examined after KOH preparation revealed fungal hyphae and spores.
Lymphangioma circumscriptum
History
A 12-year-old boy presented with asymptomatic, thick-roofed blister-like lesions involved one side of the trunk in dermatomal distribution since first year of life. Some of the lesions were bloody and others filled with clear fluid. The scar in the upper portion was due to bad surgical treatment at age of 6 years.
Papular urticaria
History
A 2-year-old male infant presented with pruritic, urticated papules involved the face, extremities and the trunk of one week duration with crops of new lesions are appearing whereas some old ones have disappeared.