Raynaud's (or Reynaud's) phenomenon typically involves the digits, fingers and toes. While it can be a primary disorder, the usual procedure is to first exclude that it's heralding the presence of another disorder, especially an autoimmune one; e.g. systemic scleroderma, sys. lupus erythematosus, rheumatoid arthritis, more. Sounds simple but autoimmune disorders sometimes have widespread, even paradoxial, signs/symptoms and can then be quite difficult diagnose and manage.
It sounds strange to report that "...it wasn't cold out of the water...". Has this problem happened before? If not, then are her fins well fitted?
The following are more general health-related questions off the top of my head. These are just to start the thought gears grinding. Don't respond to any or all of them according to your choice since they undoubtedly touch personal issues and 1) this is a public forum and 2) there's absolutely no intention here to establish a patient relationship.
Were other parts of her body also having problems, such as her fingers, ears, tip of her nose? Along with redness, were other skin discolorations or complaints noticed, especially not long after the booties came off? Were the feet both cold to the touch? Tingling or numbness? Does she have other health complaints; e.g. joint pain, digestive problems or diarrhea, skin problems such as rashes or areas of thickening, dry brittle hair, unexplainable fatigue or lethargy, varicose veins or other venous problems, limb puffiness or swellings, atherosclerosis, problems with other organs such as the kidneys. Is she using vasoconstrictive medications such as decongestants. Smoking or caffeine junkie? Diabetes? Undergoing hormone therapies or pregnant?
It sounds strange to report that "...it wasn't cold out of the water...". Has this problem happened before? If not, then are her fins well fitted?
The following are more general health-related questions off the top of my head. These are just to start the thought gears grinding. Don't respond to any or all of them according to your choice since they undoubtedly touch personal issues and 1) this is a public forum and 2) there's absolutely no intention here to establish a patient relationship.
Were other parts of her body also having problems, such as her fingers, ears, tip of her nose? Along with redness, were other skin discolorations or complaints noticed, especially not long after the booties came off? Were the feet both cold to the touch? Tingling or numbness? Does she have other health complaints; e.g. joint pain, digestive problems or diarrhea, skin problems such as rashes or areas of thickening, dry brittle hair, unexplainable fatigue or lethargy, varicose veins or other venous problems, limb puffiness or swellings, atherosclerosis, problems with other organs such as the kidneys. Is she using vasoconstrictive medications such as decongestants. Smoking or caffeine junkie? Diabetes? Undergoing hormone therapies or pregnant?