About
About
Meet Dr. Senna
Maryanne Makredes Senna, MD, is a board-certified dermatologist at Lahey Clinic and Assistant Professor of Dermatology at Harvard Medical School. Dr. Senna founded and directs the Lahey Hair Loss Center of Excellence and serves as principal investigator of the research unit. Prior to this role, she founded the MGH Hair Loss Clinic and clinical trials unit, which she ran for nearly 10 years.
She has held a number of pharmaceutical, device and foundation appointments. Widely published and recognized for her clinical expertise, teaching, and research, Dr. Senna is frequently invited to speak and give lectures nationally and abroad and has been quoted in top tier media publications such as the New York Times and The Atlantic. She has also been featured on multiple news outlets including Good Morning America, CNN, and in the HBOMax documentary series Not So Pretty. Dr. Senna is an esteemed member of several professional societies and is co-director of the Hair Health Summit, the only US CME accredited clinical meeting for hair loss disorders.
Background
Dr. Senna earned her medical degree at Tufts University School of Medicine. She completed an internal medicine internship at Beth Israel Deaconess Medical Center and her dermatology residency at UMass Chan Medical School.
Clinical focus
Her practice is devoted to hair and scalp disorders. These include alopecia areata, the scarring alopecias (lichen planopilaris, frontal fibrosing alopecia, and central centrifugal cicatricial alopecia), androgenetic alopecia, and telogen effluvium.
Research
Dr. Senna leads industry sponsored clinical trials and investigator initiated studies of new treatments for hair loss. Her group has published more than 120 peer-reviewed papers on alopecia areata, the scarring alopecias, and the safety of systemic therapies. See publications.
Education and events
The 2026 Hair Health Summit ran August 14 to 16 in Chicago with co-director Crystal Aguh, MD, of Johns Hopkins. It included a resident bootcamp and resident travel awards.
Dr. Senna moderating a panel and on stage with fellow speakers at the 2026 Hair Health Summit in Chicago. Photos by Abel Arciniega.
She directed the "Hair Disorders Made Easier" session at the American Academy of Dermatology Annual Meeting in 2024 and 2025. She also teaches a LearnSkin course on scarring alopecia.
Mentorship
Dr. Senna mentors medical students and residents in hair research. Through the American Hair Research Society mentorship program, she mentored Raymond Ezzat and Sara Abdel Azim in 2024. Many of her former fellows now train or practice in dermatology. Meet our alumni.
Service and recognition
She has served on the boards of the Scarring Alopecia Foundation and the American Hair Research Society. She is a member of the Scientific and Medical Advisory Task Force of the National Alopecia Areata Foundation. Boston Magazine named her a Top Doctor in 2026.
