<unk>  is a form of severe pustular psoriasis occurring in pregnancy which may occur during any trimester. It is the only well known pustular psoriasis which is treated with steroids.
Impetigo herpetiformis
Streptococcal intertrigo
Bullous impetigo
Shingles
Dermatitis repens
Blister beetle dermatitis
Paederus dermatitis
Herpes labialis