Diaphragm or Cap - A Contraceptive Method

The diaphragm, also known as a cap, is a barrier method of contraception used by women to prevent pregnancy. It is a flexible, dome-shaped bowl made of latex or silicone that is inserted into the vagina to cover the cervix, preventing sperm from entering the uterus.

How it Works

The diaphragm works by blocking the entrance to the uterus, stopping sperm from reaching and fertilizing an egg. It must be used in conjunction with a spermicide, which is applied to the diaphragm before insertion, to increase its effectiveness. The spermicide helps to kill any sperm that may come into contact with the diaphragm.

Types of Diaphragms

There are several types of diaphragms available, including:

  • Latex diaphragm: This is the most common type of diaphragm and is made from latex.
  • Silicone diaphragm: This type of diaphragm is made from silicone and is a good option for women who are allergic to latex.
  • Archer diaphragm: This type of diaphragm has a springy rim that helps it to fit snugly over the cervix.

Insertion and Removal

To use a diaphragm, it must be inserted into the vagina before intercourse. It should be inserted with spermicide and left in place for at least 6 hours after intercourse. The diaphragm can be removed by hooking one's finger under the rim and gently pulling it out.

Effectiveness

The effectiveness of a diaphragm depends on several factors, including proper use and fit. When used correctly with spermicide, the diaphragm is approximately 88-94% effective in preventing pregnancy. However, with typical use, the effectiveness can be lower, ranging from 71-88%.

Advantages and Disadvantages

The advantages of using a diaphragm include:

  • Easy to use once properly fitted
  • No hormonal side effects
  • Can be used during breastfeeding
  • Inexpensive compared to other forms of contraception

The disadvantages of using a diaphragm include:

  • Requires proper fitting by a healthcare provider
  • Must be inserted before intercourse
  • Can cause urinary tract infections (UTIs) in some women
  • May not be suitable for women with certain medical conditions, such as pelvic organ prolapse

Risks and Complications

While the diaphragm is generally a safe form of contraception, there are some potential risks and complications to consider. These include:

  • Urinary tract infections (UTIs)
  • Vaginal irritation or allergic reactions to the spermicide or latex
  • Pelvic organ prolapse
  • Toxic shock syndrome (TSS), although this is rare

Conclusion

The diaphragm, or cap, is a barrier method of contraception that can be an effective way to prevent pregnancy when used correctly. While it has its advantages and disadvantages, it can be a good option for women who are looking for a non-hormonal form of birth control. It's essential to consult with a healthcare provider to determine if the diaphragm is suitable for individual use and to get properly fitted.

Frequently Asked Questions (FAQs)

What is a diaphragm or cap in medical terms?
A barrier method of birth control inserted into the vagina to prevent pregnancy.

How does a diaphragm work?
It covers the cervix, preventing sperm from entering the uterus.

What types of diaphragms are available?
Latex, silicone, and latex-free diaphragms are available, including different sizes.

How is a diaphragm fitted?
A healthcare provider measures the vagina to determine the correct size.

Can anyone use a diaphragm?
Most women can use a diaphragm, but some may not be suitable due to certain medical conditions.

Are diaphragms effective in preventing pregnancy?
When used correctly, diaphragms are around 88% effective in preventing pregnancy.

Do diaphragms protect against STIs?
Diaphragms do not provide significant protection against sexually transmitted infections (STIs).

How often should a diaphragm be replaced?
Typically every 1-2 years or as recommended by the manufacturer or healthcare provider.

Can a diaphragm be used with other forms of birth control?
Diaphragms can be used with spermicides, but not with certain other methods, such as an IUD.

Are there any potential side effects of using a diaphragm?
Possible side effects include urinary tract infections, vaginal irritation, and latex allergy reactions.

Article last updated on: 18th October 2025.
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