Table 2.

How Trichoscopy Could Guide Alopecia Treatment

Trichoscopic Features	Meaning	Suggested Therapeutic Conduct
Black dots and flame hairs	Acute and severe insult in anagen phase	Intensify therapies such as scalp cooling or topical vasoconstrictors with the aim of protecting hair follicles as much as possible.
Pohl-Pinkus hairs	Damage occurred, but it was not difficult to completely interrupt the mitotic activity; the insult just reduced mitotic activity (hair shaft constrictions)	The exact identification of timing could enable us to intensify the use of scalp cooling or topical vasoconstrictors when the insult is more aggressive.
Numerous yellow dots	Follicles are protected by acute damage (kenogen phase)	Use scalp cooling or topical vasoconstrictors with caution (for example, reducing the time or the number of applications). It has been hypothesized that a delayed hypoxic insult could induce neogenesis of hair follicle stem cells [15]. Indiscriminate use of scalp cooling and vasoconstrictors could be harmful if other chemotherapy cycles are expected.