Toe (finger) annular constriction

Introduction The symptoms of Ahong's disease are the toe (finger) ring-shaped narrowing zone. Ahong disease, also known as ainhum, finger (toe), or dactylolysis spontanea, is an endemic disease in the tropics. Due to chronic inflammatory fibrosis, the toe (finger) is linearly narrowed, eventually forming a finger toe. False hoop disease, also known as pseudoainhum, refers to the toe (finger) narrowing of the hereditary or non-hereditary disease. Often associated with hereditary diseases such as palmoplantar keratosis, Meleda disease, linear keratosis, red pityriasis, congenital thick nails and congenital ectodermal defects, also found in leprosy, crust Disease, Raynaud's syndrome, myeloma, frostbite, trauma, burns, etc.

Cause

(1) Causes of the disease

The cause is unknown. It may be related to congenital abnormalities in genetic quality, chronic injury and long-term barefoot walking in the tropics. Or congenital skin hyperkeratosis, cleft palate secondary inflammation and fibrosis.

(two) pathogenesis

The pathogenesis is still unclear. May be associated with genetic quality, hyperkeratosis of the skin caused by chronic injury, secondary inflammation of the cleft palate and fibrosis.

an examination

Related inspection

CT examination of skin and joints and soft tissues of skin lesions

1. Skin damage begins in the proximal or lateral flexion of the first toe joint. The cleft palate is inflamed or chronically ulcerated, gradually expanding into a ring-shaped narrowing. The distal end of the toe is spherical and connected to the proximal end only one line. . After 5 to 10 years of development, it finally broke off naturally.

2. It is good for the toes, especially the small toes and fingers can be invaded.

3. Clinical manifestations of toe (referring to) annular narrowing band, similar to toe.

4. According to clinical manifestations, the characteristics of skin lesions can be diagnosed.

Differential diagnosis

Identification of the toe (finger) annular narrowing band:

Swelling refers to the increase in volume of tissue due to inflammation or congestion. The finger or toe is swollen and can be diagnosed based on clinical features.

Finger softening and atrophy: a clinical manifestation of pseudohypoparathyroidism. Patients with pseudohypoparathyroidism often find rough skin, hyperpigmentation, hair loss, fingernails, soft and atrophy, and even shedding; cataracts can occur in the intraocular lens.

Dry necrosis of the toes: a mild dry gangrene of the gangrene of the extremities of the diabetes is a common dry necrosis of the end of the finger or foot or the skin of the foot.

Dry toe at the toe: Dry toe at the toe is one of the symptoms of occlusive thromboangiitis. Thrombosis angiitis obliterans (tao) is a kind of vascular inflammation that is different from arteriosclerosis and segmental distribution. The lesions mainly involve the middle and small arteries and veins of the distal extremities. The pathological features are mainly characterized. Inflammatory cells infiltrate thrombus, and less involved in the vessel wall.

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