Pityriasis

Pityriasis
Synonyms
Pronounce	N/A
Specialty	Dermatology
Symptoms	Skin rash, itching, scaling
Complications
Onset
Duration
Types	N/A
Causes	Various, including fungal infection, viral infection, autoimmune disorder
Risks
Diagnosis	Clinical examination, skin biopsy
Differential diagnosis	Psoriasis, eczema, tinea
Prevention
Treatment	Topical corticosteroids, antifungal medication, moisturizers
Medication
Prognosis	Generally good with treatment
Frequency	Common
Deaths	N/A

Pityriasis refers to a group of skin conditions characterized by scaly, flaking skin. It can occur in various parts of the body and can be caused by several different factors. The term "pityriasis" is derived from the Greek word "pityron", which means "bran".

Types

There are several types of pityriasis, including:

• Pityriasis rosea: A common skin condition that causes a rash. It usually begins as a large circular or oval spot on your chest, abdomen or back.
• Pityriasis rubra pilaris: A rare skin disorder that causes constant inflammation and scaling of the skin.
• Pityriasis alba: A common skin condition in children, which is characterized by colorless, round patches on the face.
• Pityriasis lichenoides: A rare type of rash that usually appears as small, raised spots on the skin.
• Pityriasis versicolor: A common fungal infection that leads to small, discolored patches of skin.

Causes

The exact cause of pityriasis is unknown. However, it is believed to be caused by an overgrowth of the yeast Malassezia on the skin. Other factors such as genetics, immune system function, and environmental factors may also play a role.

Symptoms

Symptoms of pityriasis can vary depending on the type, but may include:

• Red, scaly patches on the skin
• Itching
• Discoloration of the skin
• Hair loss in the affected area

Treatment

Treatment for pityriasis depends on the type and severity of the condition. Options may include:

• Topical creams and ointments
• Antifungal medications
• Light therapy
• Oral medications

See also

• Dermatology
• Skin disease
• Rash

References

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