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Accurate diagnosis of cicatricial alopecias requires thorough scalp examination and multiple biopsy techniques.

Methotrexate treats various disorders by inhibiting DNA synthesis, but careful monitoring is needed to avoid toxicity and manage side effects.

Folliculitis decalvans is a rare scalp condition causing scarring hair loss, treated with long-term antibiotics and other medications, but it often comes back and is hard to manage.

Hair follicle hyperplasia is common in both benign and malignant skin lymphoproliferative disorders, with a proposed new term "pseudolymphomatous adnexitis."

Inflammatory skin conditions are the most common in Brazilian children, with atopic dermatitis being the top issue.

Phototherapy is effective and well-tolerated for treating childhood psoriasis and pityriasis lichenoides chronica.

Syphilis has a wide range of symptoms that can look like other diseases, and if not treated, it can progress to a more serious stage, especially in HIV-positive patients.

The document concludes that while some hair and scalp disorders can be treated, hair loss from destroyed follicles is permanent, and damaged hair can only regrow naturally.

Sudden weight loss can cause significant hair loss, and using colchicine on the skin for psoriasis may be unsafe.

The review emphasizes the need to recognize skin conditions that affect hair follicles and sweat glands to avoid misdiagnosis.

Diagnosing and treating skin conditions is challenging, especially when drug reactions mimic other diseases.

A brown shadow seen in dermoscopy is a marker for lichen nitidus.

The document concludes that while white skin, nail, and mucosa diseases increase skin cancer risk, they are generally harmless, especially compared to darker pigmentation conditions.

Methotrexate is effective and well-tolerated in children for certain skin conditions but requires careful monitoring.