What should I do if my child has a hard lump on the sole of his foot that is particularly itchy?

Children with hard bumps on the soles of their feet especially itchy commonly seen in tinea pedis, eczema, papular urticaria and other diseases, need to be clearly diagnosed, choose the appropriate drugs, such as antihistamines, antifungals, antipruritic agents, glucocorticoid medication, etc., for treatment.
1. Tinea pedis: this disease can be first used 10% salicylic acid ointment or compound benzoic acid ointment, etc. to soften the keratin; topical antifungal drug treatment, such as ketoconazole ointment, miconazole ointment, etc.; in severe cases, oral antifungal drug treatment, such as itraconazole, terbinafine and so on.
2. Eczema: topical glucocorticoids to reduce symptoms, such as dieldrin cream, mometasone furoate ointment, etc.; topical antipruritic agents to relieve itching, such as glycerine lotion, etc.; itching severe, oral antihistamine treatment, such as diphenhydramine, epinastine and so on.
3. papular urticaria: you can use external antipruritic agent treatment, such as glycerine lotion, peppermint tincture, etc.; symptoms are more serious, the external glucocorticoid treatment, such as tretinoin ointment, etc.; oral antihistamines to reduce itching and rash, such as chlortetracycline, epristin, etc.; edema is serious, oral glucocorticoid treatment, such as prednisone, etc..
It is recommended that patients go to a regular hospital, after a clear diagnosis, follow the doctor’s instructions and reasonable medication, do not blindly self-medication.