Dermatology & Venereology Specialists in Barishal

Dermatologist: Complete Guide to Skin, Hair, Nail Diseases, Sexual Disease, Diagnosis, Treatment & When to See a Specialist

A dermatologist treats acne, eczema, psoriasis, fungal infections, allergies, pigmentation problems, hair loss and many other conditions of the skin, hair and nails. This guide explains which changes deserve attention, how doctors reach a diagnosis, how treatment works and how to care for your skin day to day. It also warns about common mistakes, such as using steroid creams without advice. A rash with fever, blistering or peeling skin, or swelling of the lips and face with breathing difficulty needs a hospital emergency department immediately.

This guide explains what a dermatologist treats, how skin conditions are diagnosed, and how treatment and daily care work.

Skin specialist visits often begin after weeks of trial and error with creams, so this article starts from the basics. The sections below describe common conditions, simple tests and safe habits in plain language.

Key Takeaways

• A dermatologist treats the skin, hair and nails, including common problems such as acne, eczema, fungal infections and hair loss, as well as less common diseases.
• Many skin conditions are long-term and respond best to a clear diagnosis and a consistent plan rather than repeated trial and error.
• Steroid and skin-lightening creams used without advice can cause lasting damage, so use only what a doctor recommends.
• A rash with fever, blistering or peeling, or facial swelling with breathing trouble is an emergency.

Table of Contents

1. Why skin problems are misread or self-treated
2. Conditions a dermatologist treats
3. Common conditions in focus: acne, eczema, psoriasis and fungal infections
4. How diagnosis works
5. Treatment and medicine safety
6. Skin care and prevention
7. Warning signs that need urgent care

Why skin problems are misread or self-treated

• Many rashes look alike, so a fungal infection, eczema and an allergy are easily confused.
• Creams from shops, friends or social media are widely shared, even though the right product depends on the diagnosis.
• Steroid-containing creams can make a rash look better at first and then worsen it, which hides the real problem.
• People often hope that a condition will pass, and some, such as a changing mole, need early checking.
• Embarrassment about visible or intimate skin problems delays visits that would otherwise be simple.

Conditions a dermatologist treats

• Acne and its scars: blocked pores, pimples, cysts and marks left behind.
• Eczema and dermatitis: dry, itchy, inflamed skin, including reactions to soaps or metals.
• Psoriasis: thick, scaly patches caused by an overactive immune response.
• Fungal, bacterial and parasitic infections: ringworm, boils, scabies and similar conditions.
• Allergies and hives: itchy raised welts and reactions to food, drugs or insects.
• Pigmentation disorders: vitiligo, melasma and dark patches.
• Hair and nail disorders: hair loss, dandruff and nail changes.
• Skin growths and cancer checks: warts, moles and suspicious lesions.
• Leprosy and sexually transmitted skin conditions: diagnosed and managed with privacy and care.

Common conditions in focus: acne, eczema, psoriasis and fungal infections

Acne

• It develops when oil, dead skin and bacteria block pores, and hormones often play a part.
• Mild acne may respond to gentle cleansing and suitable creams, while deep or scarring acne needs medical treatment.
• Squeezing spots can deepen scars, so avoid picking.
• Early treatment lowers the chance of permanent marks.

Eczema

• The skin barrier is weak, so skin becomes dry, itchy and prone to flare-ups.
• Triggers can include soaps, heat, sweat, dust and stress.
• Treatment focuses on regular moisturising, avoiding triggers and short, supervised use of anti-inflammatory creams.
• It tends to come and go, so a long-term plan matters.

Psoriasis

• It causes thick, red, scaly patches, often on the elbows, knees and scalp.
• It is not contagious, and it can sometimes involve the nails or joints.
• Treatments range from creams and light therapy to tablets or injections for severe disease.
• Joint pain with psoriasis should be mentioned to the doctor.

Fungal infections

• Typical signs are ring-shaped, itchy patches that spread slowly, often in warm, sweaty areas.
• Treatment with antifungal medicine must be completed, even if the skin looks better early.
• Using steroid creams on fungal rashes can make them spread and become harder to diagnose.
• Keeping skin dry and washing towels and clothing helps prevent repeat infections.

How diagnosis works

• History and examination: your doctor asks how long the problem has lasted, what makes it worse, which products and medicines you use and whether anyone else at home is affected.
• Close inspection and dermoscopy: a magnifying device helps look at moles, spots and hair roots.
• Skin scraping or swab: checks for fungus, scabies mites or bacteria under a microscope or in a lab.
• Skin biopsy: a tiny sample is taken under local anaesthetic when the cause is unclear or cancer is suspected.
• Patch test: small samples of common substances are placed on the back to find contact allergies.
• Blood tests: look for allergies, thyroid problems, vitamin deficiencies or hormonal causes.

Treatment and medicine safety

• Creams, lotions and shampoos: the first line for many conditions, applied in the amount and for the length your doctor advises.
• Tablets and injections: used for infections, severe acne, psoriasis or allergic disease when topical care is not enough.
• Light therapy: controlled ultraviolet treatment for conditions such as psoriasis, eczema and vitiligo.
• Procedures: cryotherapy for warts, minor surgery for cysts and growths, and laser treatments for selected conditions.
• Steroid creams: strong or long-term use without supervision can thin the skin and cause stretch marks, acne and rebound flares.
• Skin-lightening products: avoid unregulated creams, since some contain harmful ingredients.
• Review visits: needed to check response, adjust treatment and watch for side effects.

Skin care and prevention

• Use a gentle cleanser and a moisturiser suited to your skin type.
• Protect your skin from the sun with shade, clothing and a broad-spectrum sunscreen, all year round.
• Avoid sharing towels, combs and razors, which can spread infections.
• Keep skin folds clean and dry, and change damp clothing promptly.
• Do not pick at spots, and avoid harsh scrubs.
• Check moles and skin spots regularly, and report changes in size, shape or colour.
• Manage stress and sleep, since both can worsen several skin conditions.

Warning signs that need urgent care

• A fast-spreading rash with fever, or skin that blisters or peels, especially with mouth or eye sores
• Swelling of the lips, tongue or face with trouble breathing after a rash, medicine or sting
• A red, hot, painful area that spreads quickly, particularly with fever
• A mole that changes quickly, bleeds or does not heal
• A widespread painful rash soon after starting a new medicine

Go to a hospital emergency department for these, and do not wait for a routine appointment.

Quick-Reference Table

Which Specialist Should I See?

• General physician: a good first stop for mild rashes and for referral.
• Endocrinologist: when hormonal problems may be behind acne, hair loss or unusual skin changes.
• Gynaecologist: for menstrual and hormonal issues that may link with skin and hair problems.
• Oncologist: if a skin cancer is confirmed and further treatment is planned.

Myths and Facts

• Myth: Acne is caused by dirty skin. Fact: It is driven by oil, hormones, bacteria and genetics, and harsh scrubbing can worsen it.
• Myth: Eczema is contagious. Fact: It is not, although infected eczema can need treatment.
• Myth: Skin-lightening creams are a safe way to even out skin tone. Fact: Unsupervised products can contain harmful ingredients and cause lasting damage.
• Myth: Sun protection is only needed in summer. Fact: Ultraviolet rays reach the skin throughout the year.

Call to Action and Related Specialties

If a skin, hair or nail problem has lasted longer than you expected or keeps returning, arrange a consultation before trying more products. You can browse the dermatologist page and other specialist guides on Doctor Barishal to see which doctor suits your needs.

Related specialties:

• Endocrinologist
• Gynaecologist
• Oncologist