Baby of 1 yrs Old having small pustules on hands and feet since 5 days .itching please suggest treatment

AN 8 MONTHS BREST FEEDING BABY C/0 OF WHEALS ALL OVER THE BODY FROM 2 DAYS ITCHING MOSTLY AT NIGHT TIME AND AFTER WARM WATER BATH ASSOSCIATED WITH CORYZA AND NOSTRILS BLOCKAGE DURING SLEEP MOTHER EATS FISH 2 DAYS AGO PLEASE TELL ME THE DIAGNOSIS?? AND MANAGEMENT

6 yrs old boy this rashes all over body suddenly today appears .very itching . No fever. Pls dx n tx.thank u

1n1/2 yr old male boy having this type of lesion since 4 day . Similar episode in past also but less in severity relieved by unknown medication

c/o itching sin 3 days with small urticaria type eruption which also seen same type before 1 year in winter spot dx and rx