Q My seven-year-old has two clusters of little bumps on his skin. The GP says there is nothing we have to do about them and we should just wait for them to clear up. They look like warts, but he says they’re different.

It sounds like he has a really common childhood condition called Molluscum. I see this at least weekly in my clinic, but I think most people haven’t heard of it. That’s possibly because parents don’t often discuss it – it doesn’t look that nice and so understandably it has embarrassment associated with it.

It really shouldn’t have, as it is very common in primary school age children and just ‘one of those things’; it is not related to cleanliness and should have no stigma attached to it.

Molluscum looks like little pearly bumps on the skin and usually, like in your son, they come in little clusters. Most children get maybe four or five, but some can be unlucky and get a lot more. The condition is caused by a virus like the one that causes warts and the condition is totally harmless.

There are two main issues: firstly, there is no mainstream treatment for it and secondly the bumps take at least 12 to 18 months to clear up naturally. It can be upsetting if children feel self-conscious about them, but usually they are on the body under clothes: I find mums are generally more upset than the kids. I would advise not to mention them to your son and wait for them to go naturally.

Q My mother is 80 and has been told she has osteoporosis. She says the calcium tablets she has been given are unpalatable, so refuses to take them. Are they essential?

Dr Ellie Cannon

Dr Ellie Cannon

Osteoporosis is a condition where the bones lose the density and strength they once had, and this makes people vulnerable to broken bones.

In someone elderly like your mum this is particularly important, as elderly people are more prone to trips and falls, so more susceptible to a fracture.

Your mother should have been assessed by her GP for her risk from fractures: nowadays this determines how we treat osteoporosis, as it is not one-size-fits-all any more.

Calcium is prescribed for people with osteoporosis if their diet calcium intake is inadequate. In order for your mum to stop her calcium tablets, she needs to be having 700-1,000mg of dietary calcium a day. That means a diet rich in milk, yoghurt, leafy vegetables like kale and broccoli, and sardines.

To give an idea of how that would look, a 200ml glass of milk contains 240mg of calcium and a tin of sardines around 500mg; so if she likes that type of food, her diet could be adequate. You can find useful calcium calculators online to see if she gets enough, for example at the British Dietetic Association website.

Even if she doesn’t take calcium tablets, she will still need to take vitamin D tablets. Both are essential for healthy, strong bones, and vitamin D is not easy to come by from the diet or minimal sunshine we have in the UK.

Q With the cold weather we’ve been having lately, my fingers have occasionally been very painful and sometimes they turn white or blue. Is this just poor circulation?

Yes, it certainly could be. It sounds like you have a relatively common circulation condition called Raynaud’s phenomenon. This is when the fingers and toes become cold, uncomfortable and pale, and normally happens in cold weather.

The fingers often change colour as you describe, changing from normal to white and then often to blue, before returning to normal. It can be quite painful, particularly at the end of the fingers, as the blood supply shuts down temporarily: it is caused by a spasm in the blood vessels at the end of the fingers.

The white you see is a lack of blood when the blood vessels have shut down. It is important to keep your whole body warm as symptoms are then less likely to occur, so wear a hat and scarf, as well as warm socks and gloves. Dress up warm before you go out as opposed to waiting to feel cold before putting your woollies on.

You can buy special portable heat packs and even heated gloves in some pharmacists especially for this problem. It may help to cut down caffeine and stop smoking to improve your circulation, and NICE guidelines recommend regular exercise to improve blood flow. Some people need medication to control the problem: we use a blood pressure tablet called nifedipine, so if keeping warm fails, have a chat with your doctor.