Skin hemangioma is a benign vascular tumor. In most cases, a hemangioma tumor of the skin develops from birth as a result of the proliferation of blood vessels.

Leprosy (leprosy, Hansen's disease) is a chronic infectious disease caused by mycobacterium leprae. Men are sick more often. Negroes are more predisposed to leprosy, but the disease is easier for them.

Red lupus is a chronic disease characterized mainly by exacerbation in the summer. For the first time in 1927 he described P. Raycr under the name "Flux scbacc". A Cazenava (1951) called this disease "red lupus." However, according to many dermatologists, this name does not reflect the essence of the disease and it is expedient to call it erythematosis.

Skin atrophy occurs due to disruption of the structure and function of the connective skin and is clinically characterized by thinning of the epidermis and dermis. The skin becomes dry, transparent, wrinkled, gently folded, hair loss and telangiectasia are often noted.

Sinusitis is an inflammation of the mucous membrane of the paranasal sinuses. Synonyms: sinusitis, etmoiditis, frontitis, sphenoiditis, hemisinusitis, pansinusitis. The clinical course and symptoms of acute sinusitis are very similar. Usually, on the background of recovery from acute respiratory viral infection and influenza, the temperature response, weakness, the state of health worsens, the symptoms of intoxication appear, the reactive edema of the eyes and cheeks, profuse purulent discharge from the nose, and pain in the sinus area appear (especially in young children).

A simple nontoxic goiter, which can be diffuse or nodular, is a non-tumor hypertrophy of the thyroid without an evolving state of hyperthyroidism, hypothyroidism, or inflammation.

Silicosis is caused by inhalation of non-crystallized quartz dust and is characterized by nodular pulmonary fibrosis. Chronic silicosis initially does not cause any symptoms or causes only mild dyspnea, but over the years it can progress with the involvement of large volumes of lungs and lead to shortness of breath, hypoxemia, pulmonary hypertension and respiratory failure.

Siderosis of the eye - is nothing like the deposition of iron salts in the tissues of the eye. With siderosis, all the tissues of the eye are impregnated with iron salts - corneal stroma, deposition of brown pigment in the form of dust on the endothelium of the cornea from the anterior chamber, which creates its brown opalescence.