What is erythema nodosum caused by?
Erythema nodosum usually is caused by a reaction to a drug, an infection (bacterial, fungal, or viral), or another disorder such as inflammatory bowel disease. Typical symptoms include fever, joint pain, and characteristic painful red bumps and bruises on the person’s shins.
What causes erythema nodosum Leprosum?
Around 1.2 percent of people with leprosy develop a type of EN called erythema nodosum leprosum or type 2 lepra reaction. Possible causes of EN include: infections, such as Streptococcal pharyngitis or strep throat. bacterial infections, such as Mycoplasma pneumonia or tuberculosis.
How do you describe erythema nodosum?
Erythema nodosum is characterized by tender, red bumps, usually found symmetrically on the shins. Up to 55 percent of cases have no clear identifiable cause. Sometimes, erythema nodosum is not a separate disease. Rather, it is a sign of some other infection, disease, or of a sensitivity to a drug.
What is meaning of erythema nodosum Leprosum?
Erythema nodosum leprosum (ENL) is an immune-mediated complication of leprosy, characterized by the presence of multiple inflammatory cutaneous nodules and systemic symptoms such as fever, malaise, arthritis, iritis, neuritis and lymphadenitis.
How is erythema caused?
Erythema is a type of skin rash caused by injured or inflamed blood capillaries. It usually occurs in response to a drug, disease or infection. Rash severity ranges from mild to life threatening.
Is erythema nodosum related to lupus?
In the second patient panniculitis had the clinical appearance of erythema nodosum and was one of several presenting symptoms of SLE. These patients were part of a group of 68 newly diagnosed patients with SLE, indicating a 3% prevalence of panniculitis in SLE.
Does erythema nodosum come and go?
Characteristic features of erythema nodosum include barely raised, tender, reddish nodules, most commonly below the knees in the front of the legs. They are typically painful and can slowly come and go.
Can erythema nodosum cause swelling?
Signs and symptoms of erythema nodosum include painful, tender red or purple raised bumps (nodules) on the shins. Other symptoms of EN include joint swelling, redness, or pain, and enlarged lymph nodes in the chest.
What causes erythema nodosum?
In other cases, it is associated with an identified infection, drug, inflammatory condition, or malignancy [7]. Other viral and bacterial diseases associated with erythema nodosum include herpes simplex, viral hepatitis, human immunodeficiency virus ( HIV) infection, Campylobacter infection, and Salmonella infection.
Which tests are performed in the workup of erythema nodosum (EN)?
Additional evaluation should be performed to determine the underlying cause of erythema nodosum. This may include a full blood count, erythrocyte sedimentation rate (ESR), antistreptolysin-O (ASO) titer and throat culture, urinalysis, intradermal tuberculin test, and a chest x-ray.
What is erythema contusiforme?
Erythema contusiforme, when a subcutaneous hemorrhage (bleeding under the skin) occurs with an erythema nodosum lesion, causing the lesion to look like a contusion (bruise)
What is the difference between panniculitis and erythema nodosum?
Erythema nodosum is a type of panniculitis, an inflammatory disorder affecting subcutaneous fat. It presents as tender red nodules on the anterior shins. Less commonly, they affect the thighs and forearms [1–3].