Dermatology is a branch of medicine devoted to the diagnosis and treatment of a myriad of medical conditions affecting the health, structure, and function of the skin, hair, and nails. A wide variety of conditions and diseases affect the skin, ranging from birthmarks and moles, to acne and psoriasis, to viral infections such as chickenpox and shingles. The skin is also prone to allergic reactions and irritations. Other disorders of the skin include warts, hair loss, urticaria (hives), alezzema, and rosacea. Skin disorders can be caused by a host of factors, ranging from inadequate hygiene, exposure to environmental factors such as extreme temperatures and low humidity, or a reaction to a particular medication or substance. In some cases, skin problems are hereditary or due to immunologic disorders. Dermatologists specialize in treating both common and complex skin diseases. They conduct a thorough physical examination of the skin and determine the underlying cause of the condition before making an appropriate treatment plan. Treatment can vary depending on the severity and type of condition and may include topical creams, lotions, antibiotics, phototherapy, laser therapy, and oral medications. For patients who suffer from multiple skin conditions, or dermatological disorders that are not readily responding to treatment, dermatologists may consider alternative therapies such as immunotherapy, acupuncture, and bio-identical hormones. Additionally, their expertise extends to skin cancer, which is becoming more common thanks to increased sun exposure and lifestyles. Advanced medical treatments for skin cancer, including Mohs surgery, can provide a more efficient and reliable way to get rid of precancerous lesions. Ultimately, dermatology is a field of medicine that is dedicated to providing comprehensive, evidence-based care to people with a myriad of skin conditions, ranging from minor injuries such as bug bites to advanced skin cancers. With the right diagnosis and treatment plan, dermatologists can help improve the quality of life of people with skin diseases and disorders.