Because your skin is more active during pregnancy, you may become sensitive to certain soaps or other washing or cleaning products, or to cosmetics or perfumes. You may also be more sensitive to sunlight. (Being 'sensitive' to a product means you have a local reaction – itching or a rash. This may be only temporary. It does not mean you are 'allergic'. An allergic condition is one in which body produces a more general reaction – breathing problems, swelling of the face, widespread rashes and so on.)

During pregnancy, your immune system (your protection against infection) tends to be less reactive than at other times. This is normal, and necessary to prevent your body 'rejecting' your pregnancy. (Don't forget, half of your baby's genetic material is 'alien' to your body.)

Because of this, allergic conditions (such as asthma and eczema) - often seem to get better during pregnancy, although a minority of women may find they get worse. Similarly, autoimmune conditions (such as rheumatoid arthritis and systemic lupus erythematosus) tend to improve – but not always. There is no way of predicting exactly what will happen.

What can I do about it?

• If you are taking medication – including creams or nasal sprays - for your allergic condition, ask your doctor whether it is safe to continue to do so. He or she may need to prescribe an alternative, safer medication.
• If you feel your skin is reacting badly to a cosmetic or toiletry, try to pinpoint the product that is causing your problems and do your best to avoid it whilst you are pregnant. If in any doubt, consult your doctor or midwife.

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