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The stimulation of nerve ending pain receptors causes sensitivity. The stimulation causes sodium to enter the nerve ending. It causes an electric signal to build up in the nerve which, when large enough, will be transmitted to the brain.
Lidocaine or prilocaine temporarily block pain signals from the nerves. It is done by blocking the entry of sodium into the nerve endings. It stops the formation of the electric signal and prevents nerve fibres from being sent to the brain.
Emla cream can be applied to the skin to block signals from the brain. It reduces sensitivity and can be used on the penis to help men to delay ejaculation.
Your doctor will usually give you guidelines about how much and how long to keep the medicine on your skin. These instructions should be followed carefully.
To numb your skin, use the minimum amount of Emla cream. If you use excessive cream, your body could absorb too much medication, especially if it is applied over large areas of skin or if heat is used on treated areas. The cream may be absorbed more if it is applied to areas that are cut or irritated.
You may have to cover the area where the cream was applied to preserve the medicine. Only do this if your doctor has instructed you.
Apply a thick layer to the penis of adult male genital skin 15 minutes before you plan to have sex. You must ensure that the cream is removed and disposed of before you begin to have sex with your partner.
Redness or paleness of the skin in the application site
Mild burning, itching, tingling or sensation of warmth at the application site
Disorder of the red blood cells in children manifested through bluish-grey skin due to lack of oxygen
An allergic reaction
Small red dots on the skin on the application site
If any of these or other side effects persist or worsen, then consult your doctor immediately.
Consult your doctor before using EMLA Cream if any of the following applies to you:
you are allergic to amide anaesthetics or any of the ingredients of Emla cream;
you lack glucose-6-phosphate dehydrogenase;
you have anaemia;
you are taking medicines that may cause anaemia;
you are taking antiarrhythmic medications to treat an irregular heartbeat; or
you have atopic dermatitis.
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