Thickening of the skin of the metacarpophalangeal joints is usually related to excessive friction, keratotic eczema, tinea cruris and other factors.
1. Excessive friction: for example, often holding heavy objects, repeatedly rubbing against each other and objects, easy to cause skin lesions, and ultimately will form calluses, resulting in thickening of the skin of the metacarpophalangeal joints.
2. Keratosis pilaris: also a kind of eczema, usually related to contact with external factors, which leads to dry and flaky skin, and when serious, it will cause thickening of the skin of the metacarpophalangeal joints, and ultimately, it will form keratotic plaques.
3. Ringworm: mainly related to the infection of fungi, in the early stage will appear small blisters, the later mainly to flaking mainly, with the progress of time, some patients will appear keratinization hyperplasia, which will lead to metacarpophalangeal joint skin thickening.
Metacarpophalangeal joint skin thickening, in addition to the above factors, also does not rule out due to psoriasis, lichen planus and other diseases, it is recommended to consult a doctor in a timely manner, the doctor will be based on the patient’s accompanying symptoms and then a comprehensive examination to analyze the cause of the disease.