<prompt> An infant has papulovesicular lesions on palms, soles, face and trunk. The diagnosis would heScabiesAtopic dermatitisUicariaSeborrhoic dermatitis  <response>: Ans. a. Scabies Scabies: Primary lesions are of three types:Q Burrow: Serpentine S-shaped path traversed by parasite in stratum corneumQ. It is pathognomic of lesion. Papules and papulovesicles: Due to hypersensitivityto the mite Fine pin head size follicular papules Scalp, face, palms and soles are characteristically spared in adultsQ. In infants, scalp, face, palms and soles are typically involvedQ. Atopic dermatitis: In order to qualify as a case of atopic dermatitis with the UK refinement of Hanifin and Rajkas diagnostic criteria for atopic dermatitis, the child must have An itchy skin condition or parental repo of scratching or rubbing in a childplus Three or more of the following: Onset below age 2 years not used if child is under 4 years History of skin crease involvement including cheeks in children under 10 years History of a generally dry skin Personal history of other atopic disease or history of any atopic disease in a first degree relative in children under 4 years Visible flexural dermatitis or dermatitis of cheeksforehead and outer limbs in children under 4 years Uicaria: Present with wheals, angioedema or both. Wheals is the descriptive term for transient, well-demarcated, superficial erythematous or pale swellings of the dermis, which are usually very itchy and are associated with a surrounding red flare initially. Angioedema swellings affect the deeper dermal, subcutaneous and submucosal tissues. They are usually painful rather than itchy, poorly defined, and pale or normal in colour Seborrhoeic Dermatitis: Occurs on hairy sites, flexures or on central trunk Characterized by itching or burning, severe dandruff, greasy yellow scales stuck on appearance 