Often people think "heel spur" when the real problem is a thing called
Plantar fasciitis (link). Just something else to consider.
Plantar fasciitis is a painful inflammatory condition of the foot caused by excessive wear to the plantar fascia that supports the arch or by biomechanical faults that cause abnormal pronation.[1] The pain usually is felt on the underside of the heel, and is often most intense with the first steps of the day. It is commonly associated with long periods of weight bearing or sudden changes in weight bearing or activity. Obesity, weight gain, jobs that require a lot of walking on hard surfaces, shoes with little or no arch support, and inactivity are also associated with the condition.
Plantar fasciitis was formerly called "a dog's heel" in the United Kingdom. It is sometimes known as "flip-flop disease" among US podiatrists. The condition often results in a heel spur on the calcaneus, in which case it is the underlying condition, and not the spur itself, which produces the pain.[1]
The cure for DW was to spend less time walking around the house barefoot, and holding the baby while standing barefoot. It took a while but she's much better now.