As a medical expert with a focus on dermatology and endocrinology, I have encountered numerous cases where patients present with excessive sweating, medically known as hyperhidrosis. This condition can be both a primary (idiopathic) or secondary (generalized) issue, and it can significantly impact a person's quality of life. Let's delve into the causes and mechanisms behind excessive sweating for no apparent reason, which is often referred to as primary hyperhidrosis. Primary Hyperhidrosis is the most common form and typically affects the palms, soles, and underarms. It usually starts in childhood or adolescence and may continue into adulthood. The exact cause is not well understood, but several factors are believed to contribute: 1. Genetic Factors: There is evidence to suggest that hyperhidrosis can run in families, indicating a genetic predisposition. 2. Nervous System Overactivity: The body's sweat glands are controlled by the sympathetic nervous system. An overactive response can lead to excessive sweating. 3. Hormonal Changes: Fluctuations in hormones, particularly during puberty, pregnancy, or menopause, can trigger hyperhidrosis. 4. Emotional Stress: Anxiety, stress, and emotional factors can stimulate the sweat glands, leading to increased perspiration. 5. Environmental Factors: High temperatures and humidity can cause the body to sweat more as a means of cooling down. Secondary Hyperhidrosis, on the other hand, is less common and is a result of an underlying medical condition or the side effect of certain medications. Some of the medical conditions that can cause secondary hyperhidrosis include: 1. Thyroid Disorders: An overactive thyroid (hyperthyroidism) can increase metabolism and lead to excessive sweating. 2. Diabetes: High blood sugar levels can cause sweating as the body tries to regulate glucose. 3. Gastrointestinal Disorders: Conditions like gastroesophageal reflux disease (GERD) can cause sweating due to discomfort and irritation. 4. Infections: Certain infections, such as tuberculosis, can cause night sweats. 5. Medications: Some drugs, including those for hypertension and antidepressants, can cause sweating as a side effect. 6. Neuroendocrine Tumors: These rare tumors can cause excessive sweating due to the hormones they secrete. 7. Cardiovascular Disease: Heart conditions can lead to sweating as the body tries to cope with reduced efficiency in circulation. 8. Cancer: Certain types of cancer, particularly those affecting the lymphatic system, can cause sweating. 9. Menopause: Hot flashes and night sweats are common during menopause due to hormonal changes. 10. Obesity: Excess weight can lead to increased sweating as the body works harder to maintain a normal temperature. It's important to note that while these conditions can cause excessive sweating, they are not the only causes. A thorough medical evaluation is necessary to determine the underlying cause and to develop an appropriate treatment plan. Treatment options can range from antiperspirants and medications to more invasive procedures like iontophoresis or sympathectomy. Now, let's proceed with the translation into Chinese. read more >>

Secondary hyperhidrosis (also called generalized hyperhidrosis) causes excessive sweating all over the body or in a larger area of the body and can be caused by excessive heat as well as a medical condition or medication.Mar 27, 2018read more >>