Complications of dermatomyositis

The occurrence of dermatomyositis brings great physical harm to patients. Many patients with dermatomyositis want to know what the causes of complications of dermatomyositis are. As long as we know the causes of complications of dermatomyositis, it will be much more convenient to treat and prevent dermatomyositis. We will introduce the causes of complications of dermatomyositis to you below. You can understand it and do a good job in preventing and treating dermatomyositis.

There are many causes of complications of dermatomyositis. We need to treat them differently when treating dermatomyositis. The causes of complications of dermatomyositis include complications, infections, and some malignant tumors.

Complications of dermatomyositis

1. Complications caused

Some connective tissue diseases of the body can also cause dermatomyositis. In the face of this phenomenon, we can use corticosteroids or other immunosuppressants to treat it.

The presence of anti-myosin antibodies, immune complement, and anti-nuclear factor in the patient's serum all indicate vascular damage caused by immune complexes.

Therefore, it is currently believed that the cause of dermatomyositis is a type III reaction caused by the activation of complement by antigen-antibody complexes.

2. Infected

The cause of dermatomyositis is also closely related to viral infection, but there is no conclusive medical basis for this yet.

3. Malignant tumors can also cause dermatomyositis

Adults and elderly patients suffering from dermatomyositis often have complications of visceral malignant tumors. The occurrence of the two is different in sequence, suggesting that this disease may be caused by malignant tumor toxins leading to abnormal immunity of the body.

Symptoms of dermatomyositis

1. Symptoms

1. Muscle weakness

Muscle weakness may develop suddenly and progress over weeks to months. It can destroy 50% of muscle fibers, causing muscle weakness (muscle weakness indicates progressive myositis).

Muscle weakness may develop suddenly and progress over weeks to months. It can destroy 50% of muscle fibers, causing muscle weakness (muscle weakness indicates progressive myositis).

The patient has difficulty raising his upper limbs above his shoulders, climbing stairs, and standing up from a sitting position. Due to weakness of the pelvic girdle and shoulder girdle muscles, the patient needs to use a wheelchair or be bedridden.

Dermatomyositis can cause severe damage to the neck flexor muscles, and in the most severe cases, patients cannot lift their heads off the pillow. It can also cause difficulty in pronunciation in the throat.

Involvement of the chest wall muscles and diaphragm may cause acute respiratory insufficiency. Involvement of the striated muscles of the pharynx and upper esophagus causes dysphagia and reflux.

The lower esophagus and small intestine are weakened and dilated, indistinguishable from those seen in progressive systemic sclerosis.

The muscles of the hands, feet, and face are generally not affected. Limb contractures may occur in the later, chronic stages of the disease.

2. Skin rash

The rash generally occurs in dermatomyositis, which is mostly dark erythema with lavender periorbital edema as the characteristic skin changes of this disease.

The lesions are slightly raised above the skin, with a smooth or scaly surface, and may occur on the forehead, cervical triangle, shoulders, chest, back, forearms, calves, elbows, medial malleolus, and back near the proximal interphalangeal joints.

The nail bed and nail edge are congested. A characteristic desquamative dermatitis with skin cracking often affects the radial side of the fingers. Skin lesions often resolve completely, but brownish pigmentation, atrophy, scarring, or white spots may remain.

Cutaneous calcifications may also occur, particularly in children, with a distribution similar to that of progressive systemic sclerosis but tending to be more widespread (generalized calcification), particularly in patients who are untreated or inadequately treated.

Cutaneous calcifications may also occur, particularly in children, with a distribution similar to that of progressive systemic sclerosis but tending to be more widespread (generalized calcification), particularly in patients who are untreated or inadequately treated.

3. Joint pain

About 30% of patients with polymyositis and dermatitis often experience polyarthralgia, accompanied by joint swelling, joint effusion, and other manifestations such as non-deformative arthritis. These rheumatic pains are generally mild and occur more frequently in people with Jo-1 antibody positive.

The incidence of Raynaud's phenomenon is particularly high in patients with polymyositis and other connective tissue diseases.

In the above, we introduced that dermatomyositis brings great harm to patients. Patients with dermatomyositis should know more about dermatomyositis. The above article introduced in detail the causes of complications of dermatomyositis. We know that the causes of complications of dermatomyositis include complications, infection and malignant tumors.