Trichology is the study of the hair and scalp. The term derives from Ancient Greek θρίξ (thríx), "hair" and -λογία -logia. In most jurisdictions the title of a trichologist, not the field of trichology, is considered a para-medical discipline. The Institute of Trichologists was founded in 1902. The first journal for the field, International Journal of Trichology, was founded in 2009. Diseases Alopecia Alopecia areata Alopecia universalis Frictional alopecia Frontal fibrosing alopecia Loose anagen syndrome Pattern hair loss (Androgenic alopecia) Scarring and non scarring hair loss Hair colour Canities subita Premature greying of hair The hair root & hair follicle disorders Telogen effluvium Trichostasis spinulosa Hirsutism Trichomegaly Pathogenic Microsporum audouinii Piedraia hortae Tinea capitis Trichobacteriosis axillaris Diagnosis Blood test Vitamin deficiency Hair analysis Scalp Biopsy Hamilton–Norwood scale & Ludwig scale Trichoscopy Subspecialties Trichology includes subspecialties that deal either with certain diseases or diseases of certain parts of the hair. Some of them are: Hair cloning Hair removal Management of hair loss Hair transplantation Cosmetic Hair care Curly Girl Method Hygiene Dry shampoo Treatment Collagen induction therapy Microneedling Low-level laser therapy Platelet-rich plasma Oral or topical pharmaceuticals Antiandrogen or 5α-Reductase inhibitor’s Dutasteride, Finasteride Antifungal Ketoconazole Antihypertensive Minoxidil Trichology community Associations International Association of Trichologists (IAT) American Hair Research Society (AHRS) Australasian Hair and Wool Research Society European Hair Research Society (EHRS) Hair Research Society of India Korean Hair Research Society (KHRS) Russian Hair Research Society (RHRS) Society for Hair Research Japan Ukraine Hair Research Society (UHRS) World Congress for Hair Research The Institute of Trichologists International Society of Hair Restoration Surgery The Trichological Society Journals International Journal of Trichology Trichology and Cosmetology Notable trichologists Lidia Rudnicka Desmond Tobin Antonella Tosti Cosmetic Erkkie-Harris Wells Mark Constantine F.J. Cunningham Philip Kingsley References Human hair