What is the reason for itchy breasts and nipples, especially before and after menstruation?

Patient's question:

For many years, I have had bilateral breast fibrocystic changes and a nodule.

Doctor's answer:

Consider breast eczema. Breast eczema should be treated comprehensively. It is important to analyze the causative factors and actively identify and eliminate suspected contributing factors. Avoid various adverse stimuli as much as possible, such as allergenic and irritating foods, severe scratching, and hot water washing. Stress, fatigue, emotional changes, and neurologic dysfunction are often closely related to the onset of eczema, and drugs that can restore neurologic function can also be effective for eczema. Examples include thiamine (B1), cyanocobalamin (B12), oryzanol, and lividone.
When skin damage is extensive:
① Oral antihistamines, such as chlorpheniramine (Antihistaminum) and diphenhydramine (Benadryl), or corticosteroids may be administered.
② Intravenous administration of calcium gluconate or calcium chloride may be used.
Topical treatments include:
- Cold compresses with 3% boric acid solution, 0.1% rivanol solution, or 0.05% berberine solution.
- For subacute and chronic cases, desonide ointment, zinc oxide, creosote ointment, or traditional Chinese medicine indigo powder may be applied.

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