Everyone has advice about hair. Here is what dermatologists and medical sources actually say.
Male pattern hair loss comes from the genes you inherit, not from your cap. The constant rubbing of a cap or other head covering can cause a different kind of hair loss, called traction alopecia, especially if the hair is pulled back tightly underneath.
Sources: American Academy of Dermatology: causes of hair loss; hairstyles and hair loss
Hair grows in cycles, and some shedding every day is part of that. Hair in the comb or on the pillow is not on its own a sign of hair loss.
Source: American Academy of Dermatology
Researchers think several genes are involved. Pattern hair loss tends to run in families, and having a close relative with it appears to be a risk factor.
Extra shedding often shows up a few months after a high fever or illness. It usually settles, and hair regains its normal fullness within 6 to 9 months.
Source: American Academy of Dermatology
A very stressful period, like caring for someone who is ill or losing a job, can trigger extra shedding a few months later.
Source: American Academy of Dermatology
Male pattern hair loss can start as early as the teens, and the risk increases with age. More than half of men over 50 have some hair loss.
Treatment can slow or stop further hair loss, and some men regrow some hair. The earlier treatment starts, the better it works. Without treatment, hair loss tends to continue.
Source: American Academy of Dermatology
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