"My Head Felt Burning Hot, and Then It Happened"...The 'Serious Warning Sign' That Led 18-Year-Old Jonathan to Shave His Head [Health Talk]

[Financial News] Broadcaster Jonathan revealed that he had suffered premature hair loss at the age of 18, when he was a second-year high school student, emphasizing the importance of scalp health management.
Appearing on the Munhwa Broadcasting Corporation (MBC) entertainment program 'Playlist 109,' which aired on the 8th, Jonathan recalled 2018 and confessed, "My head suddenly felt hot even though I hadn't done anything. I thought it was because there were many things making me angry, so I ignored it. But my hair began falling out in patches, and I eventually had to shave my head."
Hair loss, once considered primarily a condition affecting middle-aged and older men, has recently become increasingly common among younger people, including those in their teens and 20s. The 'scalp heat' Jonathan mentioned is one of the representative early warning signs commonly experienced by many patients with premature hair loss.

According to practitioners of Korean medicine and dermatologists, 'scalp heat'—a phenomenon in which body heat becomes concentrated in the head—is a major cause of disrupted oil and moisture balance in the scalp.
When the scalp temperature rises abnormally, sebum production can increase sharply, clogging pores and making inflammatory reactions such as seborrheic dermatitis more likely. It can also interfere with microvascular circulation around the hair roots, cutting off nutrient delivery to the hair follicles. This creates conditions in which the hair becomes thinner and falls out more easily. Stress, irregular sleep, a Westernized diet, and overwork are considered major factors that can worsen scalp heat.
Hair loss during childhood or adolescence can result from multiple causes, including academic stress, hormonal imbalances, and nutritional deficiencies, in addition to genetic factors.
Because hair loss at this stage can progress rapidly, receiving appropriate treatment early is essential. Once the condition advances to scarring alopecia, in which the follicles are completely destroyed and only scar tissue remains, regrowth becomes difficult.
In addition to a sudden hot or itchy scalp, as Jonathan experienced, people should immediately seek a specialist's diagnosis if they lose more than 100 hairs a day, if their forehead hairline is gradually receding, or if the hair at the crown becomes noticeably thinner and weaker.

Experts emphasize that daily scalp care and lifestyle improvements are especially important for preventing premature hair loss and slowing its progression.
When washing the hair, use lukewarm water. During the final rinse, using slightly cool water can help quickly cool the heat concentrated in the scalp. Leaving the hair wet for a long time after washing can cause moisture to build up on the scalp and encourage bacterial growth, so make a habit of thoroughly drying even the inner scalp with the cool setting of a hair dryer.
Managing sleep and reducing stress are also essential. Chronic sleep deprivation and severe stress stimulate the sympathetic nervous system, constrict blood vessels in the scalp, and concentrate body heat in the upper body, potentially worsening hair loss. Therefore, it is advisable to get at least seven hours of regular sleep each day and support overall blood circulation through light aerobic exercise or stretching.
If early signs of male-pattern hair loss, or androgenetic alopecia, are clear, people should not rely solely on lifestyle changes but should begin medical treatment early as well. Starting medically proven treatments—such as oral finasteride or dutasteride, or topical minoxidil—under a doctor's prescription is the most reliable way to prevent follicle deterioration.
As DinDin, who appeared on the program with him, revealed that he had "managed it by taking hair-loss medication for nearly 10 years," the key is to see a specialist as soon as symptoms are suspected, receive a diagnosis, and not miss the 'golden window' for early treatment.
[email protected] Moon Young-jin Reporter