Why Do I Sweat Under My Armpits in the Morning?

Underarm Sweating Explained

Underarm sweating refers to perspiration occurring in the axillary region. Experiencing underarm sweating in the morning may be caused by wearing heavy clothing, environmental factors, hyperhidrosis, or hair follicle hypertrophy. Detailed analysis is as follows:

1. Thick Clothing

Wearing thick clothing can lead to an increase in axillary temperature, stimulating the sweat glands to produce more sweat. If this sweat is not promptly evaporated, the underarms may feel damp. Reducing clothing and ensuring good ventilation in the axillary area can often alleviate this issue.

2. Environmental Factors

Prolonged exposure to high ambient temperatures can trigger excessive sweating from the sweat glands, as the underarms are relatively poorly ventilated, allowing for continuous perspiration. Symptoms may improve after leaving the high-temperature environment.

3. Hyperhidrosis

Hyperhidrosis is a condition characterized by abnormally increased sweating in localized areas or the entire body, even in normal environmental temperatures and conditions. This can result in unpleasant odors, skin maceration, and erythema due to impeded local sweat evaporation. For severe cases, treatments such as sweat gland ablation or sympathectomy may be considered under medical guidance.

4. Hair Follicle Hypertrophy

Frequent irritation of the hair follicles in the axillary region can cause hyperplasia and enlargement, leading to expanded sweat glands and increased perspiration. This may also increase the risk of bacterial infections. Antibiotic ointments like erythromycin ointment, mupirocin ointment, or fusidic acid cream can be used as necessary. Reducing irritation to the axillary hair follicles can help alleviate symptoms.

Apart from the aforementioned causes, hypoglycemia and hyperthyroidism can also contribute to underarm sweating. If symptoms persist or worsen, it is advisable to seek medical attention for a targeted diagnosis and treatment plan.