Pustular psoriasis is rare in children, but when they do get it, they’re most likely to have this type. Emotional stress tends to cause flares within hours. This type of psoriasis is more easily treated with steroid creams or ointments.
Palmoplantar pustular psoriasis. If you have pus-filled blisters on the palms of your hands and the soles of your feet, you likely have this form of the disease. It can return several times over months or years. It's more common in women than men. Sometimes, it causes the joints or bones to become inflamed.
Acropustulosis. This rare form of the disease causes pus-filled blisters to form on the tips of your fingers and toes, often beneath the nails. It's more likely to affect your fingers than toes, and it often happens after you get injured. The blisters can make your nails become deformed or fall off. In severe cases, the finger or toe bones may change shape or become deformed.