What is a bullous lesion?

A bulla is a fluid-filled sac or bullous lesion that forms when fluid becomes trapped behind a thin layer of skin. It’s a blister of some sort. The plural form of bulla is bullae. The blister must be greater than 0.5 centimeters (5 millimeters) in diameter to be categorized as a bulla.

What is a medical bullous?

Bullous: Characterized by blistering, such as a second-degree burn.

Is bullous disease fatal?

Even with treatment, bullous pemphigoid can sometimes cause serious problems. And it can sometimes be fatal in people with a weakened immune system or pre-existing condition. The main risks are: skin infections – these can be very serious if they get deeper into your body (sepsis)

What does bullous look like?

the blisters are large and filled with fluid that’s usually clear, but may contain some blood. the blisters are thick and don’t rupture easily. the skin around the blisters may appear normal, or slightly red or dark. ruptured blisters are usually sensitive and painful.

What causes bullous disease?

Bullous pemphigoid occurs when your immune system attacks a thin layer of tissue below your outer layer of skin. The reason for this abnormal immune response is unknown, although it sometimes can be triggered by taking certain medications.

What causes a bulla?

In bullous emphysema, bullae are created as areas of severe emphysema coalesce due to progressive loss of alveolar attachments. In contrast, bullae surrounded by normal lung likely form because of a focal anatomic defect that results in localized air trapping.

What autoimmune disease causes blisters?

Bullous pemphigoid is an autoimmune disease that causes blistering of the skin. Bullous pemphigoid is an autoimmune disorder that occurs when the immune system attacks the skin and causes blistering. People develop large, itchy blisters with areas of inflamed skin.

What is bullous disease of the lungs?

Bullous lung disease is characterized by the development of bullae within the lung parenchyma. A bulla is a permanent, air-filled space within the lung parenchyma that is at least 1 cm in size and has a thin or poorly defined wall; it is bordered only by remnants of alveolar septae and/or pleura.