A hard patch of skin develops on the elbow joint every summer.

　　During summer, the appearance of thickened, hardened skin on the elbow joint may be caused by physiological factors, or by pathological factors such as vitamin deficiency, neurodermatitis, etc. Treatment can be achieved through general management and medication. Specific details are as follows:

　　I. Physiological Factors

　　Repeated friction, cold stimulation, or excessive cleaning may lead to dryness and peeling of the skin around the elbow joint. It is important to drink plenty of water to maintain adequate hydration in the body.

　　II. Pathological Factors

　　1. Vitamin Deficiency

　　An unbalanced diet with insufficient intake of vegetables and fruits may negatively affect skin health, resulting in rough and dry skin. Treatment may include B-complex vitamins or vitamin B2 tablets, taken as directed by a physician.

　　2. Chronic Eczema

　　This may be triggered by various internal or external factors, leading to dry, hardened skin on the elbow. Under medical guidance, topical treatments such as desonide cream or tacrolimus ointment can be applied.

　　In addition to the above causes, conditions such as neurodermatitis, psoriasis, or tinea corporis may also be responsible. Patients should seek timely medical evaluation and pay attention to dietary adjustments, increasing intake of foods rich in vitamins.