What may be the cause of sudden red raised welts on both breasts and at first appearance they are red hard and sore to the touch but they disappear after a few days?

Answer 1

Common symptoms of IBC include:

• Redness of the breast: Redness involving part or all of the breast is a hallmark of inflammatory Breast cancer. Sometimes the redness comes and goes.
• Swelling of the breast: Part of or all of the breast may be swollen, enlarged, and hard.
• Warmth: The breast may feel warm.
• Orange-peel appearance: Your breast may swell and start to look like the peel of a navel orange (this is called "peau d'orange").
• Other skin changes: The skin of the breast might look pink or bruised, or you may have what looks like ridges, welts, or hives on your breast.
• Swelling of lymph nodes: The lymph nodes under your arm or above the collarbone may be swollen.
• Flattening or inversion of the nipple: The nipple may go flat or turn inward.
• Aching or burning: Your breast may ache or feel tender.

Answer 2

It may be something on your hands or what your touching it with or a cream or lotion.