Differential Diagnosis for Bullous Rash on Abdomen in a Child
Single Most Likely Diagnosis
- Impetigo: A common, highly contagious bacterial skin infection that can cause bullous rashes, often seen in children. It's typically caused by Staphylococcus aureus or Streptococcus pyogenes.
Other Likely Diagnoses
- Contact Dermatitis: An allergic reaction or irritation caused by substances coming into contact with the skin, which can lead to a bullous rash. Common allergens include plants, metals, and certain chemicals in soaps or lotions.
- Eczema (Atopic Dermatitis): A chronic condition characterized by dry, itchy skin, which can sometimes blister. It's common in children and often associated with allergies or asthma.
- Scabies: A parasitic infection caused by the mite Sarcoptes scabiei, leading to intense itching and a pustular or bullous rash, especially in areas like the abdomen.
Do Not Miss Diagnoses
- Staphylococcal Scalded Skin Syndrome (SSSS): A serious condition caused by staphylococcal toxins that can lead to widespread blistering and peeling of the skin. It's more common in infants and young children and requires prompt treatment.
- Toxic Epidermal Necrolysis (TEN): A severe skin condition usually triggered by medications, leading to blistering and peeling of the skin, which can be life-threatening if not recognized and treated promptly.
- Child Abuse: In some cases, bullous rashes or burns on the abdomen could be indicative of child abuse, particularly if the pattern of injury is suspicious or if there are inconsistencies in the history provided.
Rare Diagnoses
- Epidermolysis Bullosa: A group of genetic conditions that result in fragile skin and blisters, often from minor trauma or even spontaneously. It's present from birth or early infancy.
- Bullous Pemphigoid: An autoimmune disease that causes blistering of the skin, more common in older adults but can rarely occur in children.
- Linear IgA Bullous Dermatosis: A rare autoimmune disorder characterized by the formation of blisters on the skin, which can be triggered by medications or infections.