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The length of CAG repeats in the androgen receptor gene is linked to ovarian reserve but does not affect how the ovaries respond to stimulation.

Hair follicles and deer antlers regenerate similarly through stem cells and are influenced by hormones and growth factors.

Imiquimod cream can rarely cause temporary hair loss.

Stress may affect hair growth by influencing hair follicle development and could contribute to hair loss.

Intense pulsed light treatment mainly damages pigmented hair parts but spares stem cells, allowing hair to regrow.

Dermatologists are crucial for managing skin side effects in metastatic melanoma patients using vemurafenib and ipilimumab.

Certain gene patterns in breast cancer are linked to how active hormone receptors are and could affect patient survival.

CD90 is present on specific cells in dog hair follicles.

Two teenage brothers had a rare, treatment-resistant form of female-pattern hair loss with unusual scalp changes.

A dog with complete hair loss regrew most hair after treatment, with no relapse after stopping treatment.

Trichoscopy helps diagnose hairline recession causes in Egyptian women, with androgenetic alopecia being the most common.

Dermoscopy shows that diffuse alopecia areata progresses through specific hair growth stages.

Topical PUVA and tacrolimus ointment can effectively and safely treat infant alopecia universalis.

Crohn's disease can cause hair loss before other symptoms appear.

PRP shows promise in treating urological diseases but needs more research.

Widened sweat ducts are a very specific sign of scarring hair loss.

Hair ages due to various factors and treatments like minoxidil and finasteride can help, but more research and better public awareness are needed.

Gray hair can potentially be reversed, leading to new treatments.

Different substances that activate or block the androgen receptor can affect male development and treat conditions like prostate cancer.

Square-shaped hair loss can occur after treating a brain aneurysm due to localized radiation exposure.

Low zinc levels might contribute to early hair graying.

Triple horizontal scalp biopsies are 98% accurate in diagnosing hair loss, better than single biopsies.

Topical treatment SM04554 safely promotes hair growth in male baldness.

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.

Hair is thinner near the scalp in acute hair shedding conditions.

The guide helps doctors diagnose hair problems by suggesting a thorough patient history, physical exams, and various diagnostic tools.

Platelet-rich plasma treatment is not very effective for chronic severe alopecia areata.

Alopecia areata causes patchy hair loss due to unknown factors, affecting all ages and genders.

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

Hair loss happens due to faster cell growth and fewer cells in affected follicles.