Sweat rashes are usually linked with excess sweating and to fungal infection of warm, wet skin - especially where clothes or flesh rub.

To help prevent it, wear loose, cotton clothing and wash regularly, especially after exercise, to remove acidic, sweaty secretions.

Dry skin folds thoroughly after bathing - use tissue paper or a hairdryer set on gentle heat.

Use an anti-fungal cream to treat the rash.

Excessive sweating can be reduced by using a powerful anti-perspirant containing aluminium chloride hexahydrate. Ask your pharmacist for advice.

People can develop allergy to things they have used before

My husband was using a hair product to colour the grey in his hair.

He used it for one year with no adverse effects, but last time he came out in a terrible rash and had to go to hospital.

What could he use that wouldn't irritate?

Sometimes you can suddenly develop an allergy to a product you have previously been using with no untoward effects.

This may be because the manufacturer has changed the formulation (this isn't always indicated on the label) or because your immune system has become hypersensitive to one of the ingredients.

Several different hair colorants are available and, if your husband has not been advised to avoid these by the hospital, his only option is to try one or two on a small patch test of skin to see whether these contain the ingredient to which he is allergic.

Natural, plant based tints are usually the most gentle. Ideally, of course, your husband should avoid these products, at least for a while, to give his scalp chance to recover.

See GP to have lesions on neck properly diagnosed and treated

I am covered with small, brown warts on my neck.

Can they be removed or burned off without going to my doctor?

You do need to see your doctor to have the lesions on your neck properly diagnosed and treated.

They are most likely to be papillomas or skin tags rather than classic warts, but other possible conditions such as neurofibromas (lumps arising from nerve cells) need to be ruled out.

Papillomas or skin tags can usually be removed surgically under local anaesthetic, or burned off.

Some may respond to cryotherapy (treatment with liquid nitrogen).

For the best cosmetic result, you may need to see an aesthetic surgeon.

Tinnitus is often triggered by build up of wax or viral infection

I have a buzzing sound in my ears on and off which sometimes lasts up to a day. What can help?

It sounds as if you have tinnitus, which produces a constant unpleasant sound in one or both ears.

This may resemble a ringing, buzzing, hissing or whistling sensation.

Tinnitus is often triggered by a build up of wax in the ears, so ask your practice nurse to check this for you.

If excess wax is present, this can be removed using softening oil drops followed by syringing if necessary.

Other causes of tinnitus include a viral infection of the inner ear (labyrinthitis) or Ménière's disease - a condition where fluid pressure in the inner ear is increased.

Tinnitus can also be brought on by some drugs, especially high doses of aspirin or quinine.

If your doctor doesn't want to prescribe a treatment at present, you could try extracts of ginkgo biloba, which can help tinnitus after several weeks by improving blood flow to the brain.

Check with a pharmacist for interactions if you are taking any medications.