Erythema Nodosum Differential Diagnosis
Single Most Likely Diagnosis
- Erythema Nodosum: This is the most likely diagnosis given the specific mention of "Erythema no do sum", which seems to be a typographical error for Erythema Nodosum. It is a type of skin inflammation that is located in a certain portion of the fatty layer of skin. It results in tender red nodules or patches, most commonly on the shins.
Other Likely Diagnoses
- Cellulitis: An infection of the skin and subcutaneous tissues that can present with redness, warmth, and swelling, which might be confused with erythema nodosum due to overlapping symptoms.
- Deep Vein Thrombosis (DVT): Although DVT typically presents with swelling and pain in one leg, in some cases, it might cause skin redness that could be mistaken for erythema nodosum.
- Thrombophlebitis: Inflammation of veins due to a blood clot, which can cause redness and swelling similar to erythema nodosum.
Do Not Miss Diagnoses
- Osteomyelitis: An infection of the bone that can cause pain, redness, and swelling over the affected bone, which might be mistaken for erythema nodosum if it occurs in the lower legs.
- Necrotizing Fasciitis: A severe infection of the skin and soft tissues that can cause redness, swelling, and pain, often with a more rapid progression than erythema nodosum.
- Septic Arthritis: An infection in a joint that can cause pain, redness, swelling, and warmth, which might be confused with erythema nodosum if the joint involvement is not clearly identified.
Rare Diagnoses
- Pancreatic Panniculitis: A rare condition associated with pancreatic disease that can cause subcutaneous fat necrosis, leading to nodules and inflammation that might resemble erythema nodosum.
- Alpha-1 Antitrypsin Deficiency: A genetic disorder that can lead to a form of panniculitis (inflammation of the subcutaneous fat) that might be mistaken for erythema nodosum.
- Weber-Christian Disease: A rare inflammatory disorder of the fatty tissues under the skin, which can cause recurring inflammation and nodules, potentially confused with erythema nodosum.