 [ Symptoms ] what part does diet play in seborrheic dermititis [ Disease ] the most important thing is to have him properly diagnosed first not something that can be done over the internet since there can be hundreds if not thousands of reasons a person might itch since this has been going on for two months already and you are pregnant it would be wise to get him in to see a dermatologist best or at least his primary care medical provider without a diagnosis a proper treatment would be very very difficult