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Finasteride has different absorption and metabolism in male and female rats, with higher concentrations in certain organs and mostly excreted through feces.

Eosinophilic cystitis is often misdiagnosed, but accurate diagnosis and treatment improve outcomes.

Most children with a common hemochromatosis genotype had elevated iron levels but no severe symptoms.

DNA methylation likely doesn't cause different lambskin patterns in Hu sheep.

Tinea capitis should be considered for scalp infections in infants.

A woman was wrongly diagnosed with lupus but actually had leprosy.

Topical minoxidil can rarely cause pleural effusion if ingested.

A woman with IgG/IgA pemphigus was treated successfully with dapsone and steroids.

Syphilis should be considered if PLEVA-like symptoms don't improve with treatment.

A woman with inflammatory bowel disease improved after treatment with ustekinumab for a rare skin condition associated with her disease.

The document provides ways to tell alopecia areata from other similar hair loss conditions, using visual checks and specific tests.

The gene LRRC15 is more active in balding areas of the scalp compared to non-balding areas.

Skin problems like rashes and hair loss can help diagnose and predict COVID-19.

Scientists made a sensor that can detect a specific type of RNA related to androgen receptors quickly and accurately.

Hair and scalp infections are common and can lead to hair loss, requiring careful diagnosis to manage properly.

A cross-bred lamb with severe skin and movement issues had ichthyosis fetalis but normal vitamin A levels.

Hair loss in Androgenetic alopecia (AGA) is due to altered cell sensitivity to hormones, not increased hormone levels. Hair growth periods shorten over time, causing hair to become thinner and shorter. This is linked to miscommunication between cell pathways in hair follicles. There's also a change in gene expression related to blood vessels and cell growth in balding hair follicles. The exact molecular causes of AGA are still unclear.

A child with rickets and hair loss might have a rare type of rickets that doesn't improve much with usual vitamin D and calcium treatment.

Lupus pneumonitis can mimic tuberculosis and should be considered in diagnoses.

A baby boy had two types of temporary hair loss at birth, which might be two forms of newborn hair loss combined.

Papular mucinosis can cause eyebrow hair loss, but treatment can lead to regrowth.

The baby’s hair loss was due to a rare genetic condition, not treatable by usual methods.

The man's symptoms improved significantly after penicillin treatment for syphilis.

The document concludes that androgenetic alopecia is common, has a genetic link, and can be diagnosed and treated with medications like finasteride and minoxidil.

Most cases of high male hormone levels in women are due to polycystic ovary syndrome.

The document recommends three dermatology books for their valuable content on evidence-based medicine, comprehensive treatment descriptions, and updated information on hair and scalp disorders.

A 17-year-old in Saudi Arabia was diagnosed with a rare skin condition causing red-brown facial patches.

Leishmaniosis was found in meerkats in Madrid wildlife parks, highlighting the need for more research and careful diagnosis.

Tumid lupus erythematosus can cause non-scarring hair loss on the scalp and requires careful diagnosis.

Consider TFI in facial hypopigmentation diagnoses and confirm with a biopsy.