Category: Diseases

In immunocompromised individuals, varicella-zoster virus (VZV) infections can be more severe in primary infections (varicella) and reactivated infections [herpes zoster (HZ)]. In individuals with varicella, cutaneous and visceral involvement can

Varicella is the highly contagious primary infection caused by varicella-zoster virus. It is characterized by successive crops of pruritic vesicles that evolve to pustules, crusts, and at times, scars. This

Variegate porphyria (VP) is a serious autosomal dominant disorder of heme biosynthesis characterized by skin lesions that are identical to those of PCT (vesicles and bullae, skin fragility, milia and

Definitions A cutaneous reactivity manifest by transient wheals and transudation of fluid from small cutaneous vessels. Usually involves pruritis and may be triggered by immune, IgE and non immune hypocomplement,

Vitiligo is a major medical problem for brown and black persons that can result in severe difficulties in social adjustment. Therefore, it is important for physicians to be aware of

Wegener’s granulomatosis (WG) is a systemic vasculitis, defined by a clinical triad of manifestations that includes involvement of the upper airways, lungs, and kidneys and by a pathologic triad consisting

Xeroderma pigmentosum is a disorder of the skin that is capable of making a person sensitive to sunlight. This condition is known to cause those who suffer from it to

X-linked hyper-IgM syndrome is an immunodeficiency syndrome that is genetic. It is an extremely rare condition that is caused by a gene that is defective. X-linked hyper-IgM syndrome is a

Xanthoma lesions on the skin. Xanthomas are caused by the build up of fat in cells in the skin. There are many different types of xanthoma. This disease can cause

Xanthelasma and xanthoma are skin conditions where fat is deposited under the surface of the skin. Tiny (1-2 mm) yellowish plaques that are slightly raised on the skin surface of