Contact Dermatitis: This is a common condition that can occur in anyone, including pregnant women, due to exposure to allergens or irritants. The skin's barrier function may be altered during pregnancy, making it more susceptible to irritation.

Atopic Dermatitis (Eczema): Pregnancy can exacerbate atopic dermatitis due to hormonal changes. Itching and skin irritation are common symptoms.
Pemphigoid Gestationis: An autoimmune skin disorder that occurs during pregnancy, characterized by blistering and intense itching.
Pruritic Urticarial Papules and Plaques of Pregnancy (PUPPP): A condition specific to pregnancy, presenting with itchy, bumpy rashes, typically starting in the third trimester.
Stretch Marks (Striae): While not typically itchy, they can cause discomfort and are very common in pregnancy due to skin stretching.

Intrahepatic Cholestasis of Pregnancy (ICP): A condition that causes severe itching due to bile duct obstruction. It's crucial to diagnose as it can lead to premature birth and stillbirth if not managed properly.
Pregnancy-Related Psoriasis: Although psoriasis itself is not unique to pregnancy, its flare-ups can be triggered by pregnancy. It's essential to manage due to potential impacts on the mother's and fetus's health.
Impetigo Herpetiformis: A rare pustular psoriasis variant that occurs during pregnancy, which can lead to serious complications if not treated.

Acute Fatty Liver of Pregnancy: A rare but serious condition that can cause skin itching among other symptoms, due to liver dysfunction.
Cholestasis of Pregnancy due to Other Causes: Such as primary biliary cirrhosis or primary sclerosing cholangitis, which are rare but can present with itching.
Polymorphic Eruption of Pregnancy (PEP): Previously known as toxic erythema of pregnancy, it's a rare condition with a polymorphic rash, which, while not usually severe, can be uncomfortable and needs differentiation from other conditions.