[DOI] [PMC free article] [PubMed] [Google Scholar] 144.Aronne L, Fujioka K, Aroda V, et al
Drug treatments Nitroglycerin (NTG) (5.0 mg/ml, Henan Reagent, China) was freshly diluted to a final concentration of 1 mg/ml with saline, containing 6 % propylene glycol and 6 % alcohol

When to speak to a doctor urgently Always contact your prescribing clinician or a dermatologist if you notice: Sudden, patchy bald spots Red, painful, scaly or itchy areas on the scalp Hair loss together with severe nausea, vomiting, abdominal pain or signs of dehydration Hair loss plus symptoms like chest pain, shortness of breath, or visual changes For persistent or distressing shedding, ask your clinician about: Blood tests for iron, ferritin, vitamin B12, vitamin D, thyroid function and other nutritional markers Screening for autoimmune or hormonal causes of hair loss Whether your retatrutide dose or speed of weight loss needs adjusting A referral to a dermatologist or trichologist for scalp-focused assessment For general, evidence-based information on hair loss, you can also review resources like MedlinePlus guidance on hair loss from the U.S

Acknowledgements The authors extend their appreciation to the Deanship of Research and Graduate Studies at King Khalid University for funding this work through a Large Research Project under grant number RGP2/580/45