What Is Scabies? Itchy Skin Mites, Spread & Treatment Options
What Is Scabies? Itchy Skin Mites, Spread & Treatment Options Scabies is a contagious skin infestation caused by the human itch mite, Sarcoptes scabiei var. hominis, which burrows into superficial skin and triggers an immune reaction that produces intense itching and a pimple-like rash. Itching is often worse at night, but the diagnosis depends on […]
What Is Rubella? Skin Rash, Symptoms & Treatment Options
What Is Rubella? Skin Rash, Symptoms & Treatment Options Rubella is a contagious systemic viral infection that may cause a short-lived generalized rash, swollen lymph nodes and mild systemic symptoms, although some infected people have few or no noticeable symptoms. The illness is sometimes called German measles, but rubella and measles are caused by different […]
What Is Rosacea? Facial Redness, Triggers & Treatment Options
What Is Rosacea? Facial Redness, Triggers & Treatment Options Rosacea is a chronic inflammatory condition of the central face that can cause flushing, persistent facial discoloration, visible blood vessels, inflammatory bumps, sensitive skin and sometimes eye or skin-thickening symptoms. The signs can come and go, overlap and look different across skin tones, so rosacea is […]
What Is Rocky Mountain Spotted Fever? Skin Rash, Causes & Treatment Options
What Is Rocky Mountain Spotted Fever? Skin Rash, Causes & Treatment Options Rocky Mountain spotted fever is a potentially life-threatening tick-borne bacterial infection caused by Rickettsia rickettsii that can produce fever, severe headache, systemic illness and a rash that often appears only after the illness has already begun. RMSF is a systemic infection rather than […]
What Is Ringworm / Tinea Corporis? Fungal Skin Rash, Spread & Treatment Options
What Is Ringworm / Tinea Corporis? Fungal Skin Rash, Spread & Treatment Options Tinea corporis, commonly called ringworm of the body, is a superficial fungal infection caused by dermatophytes that often produces an expanding scaly rash with a more active outer border. Ringworm is not caused by a worm; the name comes from the circular […]
What Is Rhinophyma? Nose Skin Thickening, Causes & Treatment Options
What Is Rhinophyma? Nose Skin Thickening, Causes & Treatment Options Rhinophyma is a chronic form of phymatous rosacea that progressively thickens and enlarges nasal skin through sebaceous-gland enlargement, connective-tissue overgrowth and fibrosis. Early changes may include enlarged pores, persistent redness and irregular texture, while more established disease can become nodular, lobulated or bulbous and distort […]
What Is Vancomycin Infusion Reaction (Red Man Syndrome)? Skin Flushing, Causes & Treatment Options
What Is Vancomycin Infusion Reaction (Red Man Syndrome)? Skin Flushing, Causes & Treatment Options Vancomycin infusion reaction is a rate-related, non-IgE mast-cell reaction that can cause sudden flushing, itching and other symptoms during intravenous vancomycin administration. The reaction was historically called “Red Man Syndrome,” but Vancomycin Infusion Reaction, or VIR, is now the more accurate […]
What Is Raynaud’s Disease? Skin Color Changes, Triggers & Treatment Options
What Is Raynaud’s Disease? Skin Color Changes, Triggers & Treatment Options Raynaud phenomenon is an episodic blood-vessel spasm that temporarily reduces circulation to areas such as the fingers and toes, causing changes in color, temperature and sensation. Cold and emotional stress are common triggers because susceptible small arteries constrict more strongly than needed, then reopen […]
What Is Quinquaud’s Disease (Folliculitis Decalvans)? Scalp Pustules, Scarring Hair Loss & Treatment Options
What Is Quinquaud’s Disease (Folliculitis Decalvans)? Scalp Pustules, Scarring Hair Loss & Treatment Options Folliculitis decalvans, historically called Quinquaud’s disease, is a chronic neutrophilic scarring alopecia that causes recurrent scalp inflammation and can permanently destroy hair follicles. Active disease often produces follicular pustules, perifollicular crusting and inflammatory change around areas that progressively lose follicular openings […]
What Is Pyogenic Granuloma? Bleeding Skin Growth, Causes & Treatment Options
What Is Pyogenic Granuloma? Bleeding Skin Growth, Causes & Treatment Options Pyogenic granuloma is a benign vascular growth made of proliferating capillaries that often grows quickly and bleeds easily after minor contact. It is more accurately described as a lobular capillary hemangioma because the lesion is made of fragile blood-vessel tissue rather than pus or […]