Rubina Alves, MD, PhD, is a Specialist in Dermatology, Hospital Central do Funchal, Madeira Island, PortugalRamon Grimalt, MD, PhD, is Professor of Dermatology, Universitat Internacional de Catalunya, Barcelona, Spain

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• Introduction * Summary of hair diseases: Cicatricial and non cicatricial * Photography in hair diseases * Pull test and trichogram * Trichoscopy I: Non-cicatricial alopecia * Trichoscopy II: Cicatricial alopecia * Scalp biopsy in hair disorders * Injectable corticosteroids * Topical contact immunotherapy in alopecia areata * Lasers and new technologies in hair disease * Microneedling * Emerging Oral Treatments: Oral JAK Inhibitors for Alopecia Areata and Oral Minoxidil for Androgenetic Alopecia * Mesotherapy: Dutasteride, minoxidil, vitamins * Platelet-Rich Plasma * Hair cosmetics and cosmeceuticals * Psychological aspects of hair loss * Modern techniques in hair transplantation * Trichoscopy in hair transplantation * What you need for a trichology consultation * Conclusions