On May 15, Jensen Huang, the founder of the tech giant NVIDIA and a Chinese-American entrepreneur often referred to as the "Godfather of AI," was spotted at Beijing's Nanluogu Xiang, enjoying local delicacies like fried sauce noodles and douzhi. His casual and approachable demeanor was well-received. However, high-definition footage captured an unusual discoloration and thickening of his nails (appearing grayish-brown), which quickly became a topic of discussion on social media, with the hashtag #JensenHuangNails trending.
Some netizens speculated whether Huang might have onychomycosis, commonly known as "fungal nail infection." Others argued that, at 63 years old and engaged in high-intensity work for years, the nail changes could be due to natural aging, long-term keyboard use, or post-injury pigmentation, not necessarily a fungal infection. Concerned users even uploaded photos of his hands to AI health assistant platforms for analysis.
One such analysis, based on uploaded images showing thickened, yellowish, rough nails, suggested a high probability of onychomycosis, a fungal infection. The analysis noted that while it may look unsightly, it is treatable with patience.
What is Onychomycosis? "Without a fungal microscopy test, it's difficult to make a definitive diagnosis. Based solely on the color and texture visible in photos, there is some resemblance," said Wu Yanjing, Deputy Chief Physician of Dermatology at Zhejiang Provincial Hospital of Traditional Chinese Medicine. She explained that onychomycosis, or fungal nail infection, occurs when fingernails or toenails are infected by fungi, leading to discoloration (yellow, gray, white), thickening, brittleness, powdery texture, and sometimes separation from the nail bed.
Other Potential Causes for Thickened, Discolored Nails Beyond fungal infections, several other conditions can cause similar symptoms: 1. Nail dystrophy; 2. Psoriatic nail changes; 3. Nail involvement from eczema or lichen planus; 4. Chronic paronychia; 5. Trauma or occupational stimulation.
"Nail dystrophy, psoriatic changes, chronic paronychia, and trauma can all lead to yellowing and thickening. Congenital nail hypertrophy is also a less common cause, with nail dystrophy being more frequent in children," Wu Yanjing emphasized.
Diagnosis and Professional Guidance Onychomycosis is a common nail disorder. "Definitive diagnosis primarily relies on fungal microscopy—finding hyphae or spores under a microscope is the clearest evidence. In cases where microscopy is negative but clinical suspicion remains high, fungal culture might be performed," Wu stated. She strongly advised against self-diagnosis, recommending a professional evaluation by a dermatologist.
The AI assistant provided similar consultation advice: 1. See a dermatologist; avoid self-guessing. 2. Do not apply nail polish or topical medications before testing, as they can affect results. 3. If microscopy is negative but suspicion is high, a fungal culture or clinical judgment may be used.
It specifically noted that onychomycosis, psoriatic nails, eczema-related nail issues, and nail dystrophy can look similar but require entirely different treatments—antifungal for fungal infections versus immunomodulatory for psoriasis—and misdiagnosis can waste time and money. Wu Yanjing reiterated that treatment directions differ completely and must be guided by a professional.
Is Onychomycosis Curable? "Yes, it can be cured, but it requires patience," the AI analysis stated, noting that nails grow slowly, leading to a longer treatment cycle. Wu Yanjing concurred, stating, "Clinically, with proper treatment, onychomycosis can be cured with good overall outcomes. However, the treatment period is relatively long, typically requiring 3-6 months or more of consistent treatment."
She added that for topical antifungal medications, due to nail thickness, penetration is less effective than on skin. Therefore, filing down thickened nails before application aids drug penetration. For more severe cases, oral antifungals may be used, but they can affect liver function, necessitating regular liver function tests before and during treatment.
Even after symptoms resolve, daily precautions are advised: avoid sharing personal items like towels and nail clippers; keep hands and feet dry and wear breathable footwear to avoid moist environments favored by fungi; and for women, frequent or long-term nail polish application is not recommended.
Tips for Maintaining Nail Health Wu Yanjing advised avoiding nail-biting and frequent manicures, learning proper nail trimming techniques, and maintaining a balanced diet to prevent dryness, layering, and breakage.
The AI assistant offered specific recommendations: trim nails, leaving a 1-2 mm white edge to avoid cutting too short or digging into nail folds, reducing ingrown nail and infection risks; wear gloves during chores to minimize prolonged exposure to water or cleaners; avoid using nails as tools to pry objects or open lids; limit frequent manicures, especially those involving filing or artificial nails, allowing nails a "rest period"; ensure adequate protein intake (from meat, eggs, dairy, legumes), as nails are primarily composed of keratin.
Both Wu Yanjing and the AI assistant emphasized that if nails show significant discoloration, thickening, layering, pitting, or surrounding redness and pain—potential signs of fungal infection or other health issues—prompt medical consultation is essential.
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