The causes of hard lumps and itching within the plantar plate of the patient’s feet, consider the following: 1. keratotic eczema: erythema, peeling, blisters appear symmetrically on the soles of the feet, and after a long period of time, there is a thickening of the skin on the soles of the feet, mainly due to allergic reactions caused by the destruction of the skin barrier by allergenic substances and low immunity of the body. For treatment, you can compound clobetasol propionate ointment and urea vitamin E cream mixed with cling film to seal the package for external use, and if itching occurs severely, you can also take oral compound glycyrrhetinic acid tablets and imipramine slow-release tablets. 2. Keratosis pilaris: It is mainly caused by fungi that cause asymmetric hyperplasia of the plantar skin, which is also accompanied by itching. For treatment, a mixture of bifenazole cream and tretinoin econazole cream can be used topically, and patients who experience severe itching can also take oral itraconazole capsules. For patients with itching within the sole of the foot, also accompanied by hard lumps, need to go to the dermatology department, under the guidance of regular doctors for treatment, while during the treatment period, need to avoid spicy, stimulating food, abstain from alcohol, pay attention to rest.