There are many reasons for red bumps with itching at the neck of the feet, mostly due to external stimuli causing papular urticaria or contact dermatitis, and possibly due to certain chronic diseases, for different causes of treatment means are also different: 1, papular urticaria: usually mainly related to mosquito bites, such as mosquitoes, bedbugs, fleas and other bites caused by allergic reactions, the appearance of the rash manifestation of wind-blown papules, papular herpes The rash is accompanied by intense itching. This can be treated under the guidance of a professional doctor oral antihistamines, can be combined with topical hormonal drugs for coating treatment; 2, contact dermatitis: skin contact with external substances caused by inflammatory dermatosis, stimulation of the skin triggered by allergic reactions, can cause contact dermatitis exogenous substances of many kinds, according to its nature is mainly divided into animal, such as insects, jellyfish, etc.; plant, such as pollen, fruit, etc. Chemical, such as metals, creams, etc. It can cause local bumps and erythema accompanied by itching. At this time can be under the guidance of professional doctors oral antihistamines, can be combined with topical hormone drugs for coating treatment; 3, chronic diseases: their own patients suffering from diabetes, hypertension, chronic kidney disease, may also appear red bumps on the neck of the feet and accompanied by itching, such as diabetes when poor blood sugar control may lead to local skin papules, itching, at this time can go to the hospital in a timely manner to clarify the cause, whether it is caused by the disease itself In this case, you can go to the hospital to clarify the cause, whether it is caused by the disease itself or other reasons, and take targeted treatment and local anti-itch treatment. Patients with this condition should pay attention to a light diet in daily life, eat more fruits and vegetables, such as apples and tomatoes, to replenish vitamins, and avoid spicy and irritating foods, such as pepper, onion and ginger. Do not scratch the affected area to avoid aggravating the symptoms.