Your husband had recurrence of umbilical hernia
either due to improper surgery or failure in healing.
Consult other surgeon for further treatment.
Immunity may be poor, which caused secondary bacterial infection.
Generalised itching may be due to psyhological disturbance or some disease or drugs taken or poor hygiene.
Thorough history and clinical examination with investigations may indicate the cause of itching.
YOU CONSULT DERMATOLOGIST
Oral antihistaminics may be given.
Soothing lotion like calamine
with aloe vera
may be applied.
Avoidance of soap bath and use of dettol
liquid in bath may be suggested.
Tell him to relax and free of worries.
Everything would be good.
I hope you got my answer.
Dr. Ilyas Patel MD