It is common to find some itchy rashes in pregnancy but they are specific for pregnancy like pruritic urticarial plaques of pregnancy
( PUPP). If you have generalized itchy skin
, it can be due to the thyroid condition also. PUPP is characterized by small red bumps and hives, and when severe, the bumps form large patches. This rash usually develops on the abdomen, and spreads to the thighs, buttocks, breasts and arms. Slight itching from PUPPP may cause mild discomfort.