What is Eosinophilic fasciitis

Eosinophilic fasciitis is a very rare syndrome in which muscle tissue under the skin, called fascia, becomes swollen and thick. The hands, arms, legs, and feet can swell quickly. The disease may look similar to scleroderma but is not related. The cause of eosinophilic fasciitis is unknown. In people with this condition, white blood cells called eosinophils, build up in the muscles and tissues. Eosinophils are linked to allergic reactions. The syndrome is more common in people ages 30 to 60. Symptoms can include: bone pain or tenderness, carpal tunnel syndrome, muscle weakness, tenderness and swelling of the arms, legs and sometimes the joints, and thickened skin that looks puckered. In most cases, the condition goes away within 3 to 5 years. However, symptoms may last longer or come back.

Eosinophilic fasciitis is a very rare condition in which muscle tissue underneath the skin, called fascia, becomes swollen and thick. Rapid swelling can occur in the hands, arms, legs, and feet. People with this condition have a buildup of eosinophils, a type of white blood cell, in the affected fascia and muscles. The exact cause of this condition is unknown. Corticosteroids and other immune-suppressing medications are used to relieve the symptoms. Eosinophilic fasciitis is similar in appearance to scleroderma.[1] However, in contrast with systemic sclerosis, internal organ involvement in eosinophilic fasciitis is generally absent. Some researchers believe that eosinophilic fasciitis may be a variant of morphea (localized scleroderma).[2]

Eosinophilic fasciitis is a very rare condition in which muscle tissue underneath the skin, called fascia, becomes swollen and thick. Rapid swelling can occur in the hands, arms, legs, and feet. People with this condition have a buildup of eosinophils, a type of white blood cell, in the affected fascia and muscles. The exact cause of this condition is unknown. Corticosteroids and other immune-suppressing medications are used to relieve the symptoms. Eosinophilic fasciitis is similar in appearance to scleroderma.[1] However, in contrast with systemic sclerosis, internal organ involvement in eosinophilic fasciitis is generally absent. Some researchers believe that eosinophilic fasciitis may be a variant of morphea (localized scleroderma).[2]

This information is provided by the National Institutes of Health (NIH) Genetic and Rare Diseases Information Center (GARD).
https://rarediseases.info.nih.gov/diseases/6351/eosinophilic-fasciitis