This is NOT an allergy to seafood but a condition called urticaria
. This comes up in red lumps , itchy areas that appear randomly at various parts of the body. Individual hives may disappear in a few hours to within a day but new ones appear.
Chicken ,seafood, chocolate can appear to cause an itch as these foods are high in histamine
, the exact chemical that causes these urticarial lesions to appear.
The condition may start with an infection, but proceeds well after the infection has cleared up.
Long-acting non-sedating antihistamines like fexofenadine
taken once daily along with cetirizine
or atarax (very sedative) over 4-6 weeks help.
If it recurs, you need tests like CBC, iron levels, thyroid
functions to exclude an underlying cause.