Evidence-Based Medical Encyclopedia
Explore thousands of diseases with authoritative clinical information from WHO, CDC, NIH, and international medical guidelines. Every condition features an interactive journey from diagnosis to treatment.
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Dermatology
Herpes Zoster
Reactivation of the chickenpox virus causing a painful, blistering skin rash confined to one side of the body in a specific nerve distribution (dermatome).
Molluscum Contagiosum
A viral skin infection causing small, firm, pearly bumps with a dimple in the center, most common in children.
Pemphigus Vulgaris
A severe autoimmune condition causing painful, easily broken blisters and sores on the skin and inside the mouth.
Lichen Planus
An itchy, purplish skin rash with flat-topped bumps, often accompanied by white, lacy patches in the mouth, driven by an autoimmune reaction.
Hidradenitis Suppurativa
A chronic, painful skin condition causing recurring boils and tunnels under the skin, usually in the armpits and groin.
Atopic Dermatitis
A chronic skin condition causing severely dry, red, itchy patches. Known as 'the itch that rashes,' it mostly affects children but can persist into adulthood.
Acne Vulgaris
Acne vulgaris is a common inflammatory skin condition caused by blocked hair follicles and oil glands, leading to pimples, blackheads, and cysts.
Alopecia Areata
Alopecia areata is an autoimmune condition where the body's immune system attacks its own hair follicles, causing sudden, unpredictable patches of hair loss.
Pityriasis Rosea
A common, harmless, self-resolving rash that starts with a single large 'herald patch' followed by a 'Christmas tree' pattern of smaller spots on the torso.
Dermatomyositis
An autoimmune disease causing progressive muscle weakness and distinct skin rashes, often linked to an underlying cancer in adults.
Psoriasis Vulgaris
A chronic autoimmune skin disease causing red, scaly plaques on extensor surfaces, driven by overactive T-cells and rapid skin cell turnover.
Leprosy
A chronic bacterial infection of the skin and nerves caused by M. leprae, leading to numb skin patches and potential limb deformities if untreated.