Does Underarm Odor Always Indicate Body Odor Issues?

Having an odor under the armpits does not necessarily mean you have axillary hyperhidrosis (commonly known as body odor or bromhidrosis)?

I tend to have a noticeable odor under my arms (especially in the summer), but I wouldn't describe it as unpleasant (based on my subjective assessment).
So I would like to ask the doctor: Does having an odor under the arms necessarily mean that it's axillary osmidrosis (body odor), or could there be other possibilities? Could it be normal body odor or the scent of regular secretions? Thank you.

Dà Xióng, 30~39 year old female. Ask Date: 2011/08/08

Dr. Guo Fengsheng reply Dermatology

Odor is a subjective perception; if it does not cause discomfort to oneself or others, there is no need to be concerned.

Reply Date: 2011/08/08

More Info

Underarm odor is a common concern for many individuals, especially during warmer months when sweating tends to increase. It's important to understand that while underarm odor can be associated with body odor issues, it does not always indicate a medical condition such as hyperhidrosis (excessive sweating) or bromhidrosis (foul-smelling sweat).
The odor that you may notice in your underarm area can arise from several factors, including the presence of sweat, bacteria, and the types of products you use. Sweat itself is generally odorless; however, when it comes into contact with the bacteria that naturally reside on your skin, it can lead to the production of odor. This is particularly true in areas where sweat tends to accumulate, such as the underarms.
1. Types of Sweat: There are two main types of sweat glands in the body: eccrine and apocrine glands. Eccrine glands are responsible for regulating body temperature through sweat, which is mostly water and salt. Apocrine glands, on the other hand, are found in areas like the underarms and groin and produce a thicker, milky fluid that can contribute to body odor when broken down by skin bacteria.

2. Diet and Lifestyle: Your diet can also play a significant role in body odor. Foods such as garlic, onions, and spices can affect the smell of your sweat. Additionally, certain medical conditions, such as diabetes or liver disease, can lead to changes in body odor.
3. Hygiene Practices: Regular bathing and the use of antiperspirants or deodorants can help manage underarm odor. Antiperspirants work by blocking sweat glands, while deodorants mask odor. If you find that standard products are not effective, you may want to consider clinical-strength options or consult a healthcare provider for advice.

4. Medical Conditions: While not all underarm odor indicates a serious issue, certain conditions can lead to more pronounced body odor. For example, hyperhidrosis can cause excessive sweating, leading to stronger odors. In some cases, hormonal changes, such as those occurring during puberty or menopause, can also influence body odor.

5. Genetics: Genetics can play a role in how your body produces odor. Some individuals may naturally have a stronger body odor due to genetic factors, which can affect the composition of their sweat.

In conclusion, while underarm odor can be a sign of body odor issues, it is not exclusively indicative of conditions like hyperhidrosis or bromhidrosis. Factors such as sweat type, diet, hygiene practices, and genetics all contribute to the presence and intensity of underarm odor. If you are concerned about the odor or if it has changed significantly, it may be beneficial to consult with a healthcare professional. They can help determine if there is an underlying condition that needs to be addressed or if there are effective strategies to manage the odor.

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