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Blood tests are needed to confirm high male hormone levels in women with PCOS, as physical signs alone are not reliable.

Most people using biotin don't see skin improvements, and it may affect lab tests, so doctors shouldn't suggest it without confirming a deficiency.

Different tests are used to see how hair care products affect hair, and choosing the right test is important for accurate results.

A simplified method was introduced to diagnose most hair loss types by examining the patient's history and scalp, with some cases needing further tests.

New imaging and testing methods can effectively assess hair shape changes and damage.

New tests detect finasteride and dutasteride in urine quickly and easily.

The document explains different hair loss types and treatments, emphasizing diagnosis through examination and tests, and specific treatments for each condition.

Free Testosterone Index, bioavailable testosterone, and androstenedione are the most accurate for diagnosing excess male hormones in PCOS.

A new mutation in the FLCN gene linked to Birt-Hogg-Dube syndrome was found, suggesting people with certain lung collapse should be tested for this mutation and screened for kidney and colon cancer.

The document concludes that a thorough history, physical exam, and specific tests are crucial for diagnosing and managing hair loss effectively.

Blood tests can detect ovarian Leydig cell tumors when scans don't, and surgery can confirm and treat these tumors.

Diagnosing Polycystic Ovary Syndrome is hard due to varying symptoms, no set criteria, and the need for better tests and education.

Genetic testing is crucial before giving azathioprine to avoid severe side effects.

Some women with excess hair growth have a hormone condition that can't be diagnosed by blood or urine tests alone.

Washing test helps identify hair loss type, low iron levels significant.

A man with X-ALD improved after treatment, highlighting the need to consider X-ALD in similar patients and test their relatives.

The conclusion is that three signs can help diagnose hair loss after it happens, potentially avoiding more invasive tests.

Hair loss in HIV patients should be tested for syphilis as well.

Diagnosing alopecia areata is challenging and requires careful examination and various tests to distinguish it from other hair loss types.

Cats lose hair due to itching or health issues, needing various tests for diagnosis.

Genetic testing is crucial for diagnosing and managing non-Herlitz junctional epidermolysis bullosa.

A young girl with high testosterone was thought to have a tumor but actually had PCOS, which was treated with birth control pills.

Routine thyroid tests for diffuse alopecia in women may not be necessary, but checking for iron deficiency anemia could be useful.

Hair care products often cause allergic skin reactions, so testing and new treatments are important.

The case shows the difficulty in diagnosing certain conditions when standard tests are negative.

Homemade hair treatments can significantly lower drug levels in hair, possibly causing false-negative drug tests.

Genetic testing confirmed a rare skin disorder in a young girl, which improved with zinc supplementation.

Postmenopausal hyperandrogenism, a condition with symptoms like increased hair growth and acne, is usually caused by PCOS but can also be due to other factors. It's diagnosed by checking testosterone levels and treated either by removing the adrenal tumor or through antiandrogen therapy.

A 10-year-old boy with abnormal genital development had surgery and tests to find the cause and plan treatment.

Non-classic congenital adrenal hyperplasia (NCCAH) can mimic PCOS and requires genetic testing for proper diagnosis and treatment.