One of the reasons may be thrombocytopenia, namely low platelet count in the blood. One of the symptoms of the disease is the appearance of bruises on the limbs.
Good afternoon! If you have not received any injuries, then bruises may appear for the following reasons: - hemorrhagic vasculitis is characterized by the development of an inflammatory process that affects the small vessels under the skin, capillaries burst, as a result of which blood penetrates into the subcutaneous tissue, which manifests itself in the form of bruises on hands or other parts of the body. Most often, the cause of its development is autoimmune mechanisms and various disruptions in the body; - deficiency of vitamin C in the body. This vitamin takes part in many processes, including in the process of blood circulation. It is he who is responsible for capillary permeability and normal blood clotting. When the body is deficient in vitamin C, bleeding often occurs inside it, as a result of which bruises appear. The first symptom of a lack of vitamin C is bleeding of the gums, then the appearance of bruises on the body; - deficiency of vitamin R. This vitamin helps to strengthen the skin and walls of blood vessels. That is why, with its deficiency, unpleasant symptoms in the form of bruises may appear.
Other reasons: - blood clotting disorder (can be both hereditary and acquired); - malignant blood diseases; - cirrhosis of the liver; - various kinds of infectious diseases; - inflammatory processes in the body, which have become chronic; - taking various medications that affect blood circulation (analgesics, antidepressants, anti-asthma drugs, and many others). The appearance of bruises on the body, in particular on the hands, can provoke strength loads, taking certain medications, as well as hormonal disruptions. In addition, a bruise on the arm may appear after taking blood for a routine blood test from a vein or finger. Quite often, elderly people encounter bruises on the body. This happens for a reasonand age-related changes in the body that lead to fragility and fragility of blood vessels.