This is a vesicular and bullous disease which tends to
recur each summer in childhood on uncovered parts of the body. Although both
sexes are affected, the disease occurs more often in boys, beginning during the
first three or four years of life and usually disappearing soon after puberty. Mild types of the disorder are characterized by
papules or small vesicles (summer prurigo of Hutchinson or hydroa aestivale ),
but when the eruption is severe there are bullae, impetiginous crusts, and
pitted scars (hydroa vacciniforme). The lesions appear mostly on the face and
the extensor aspects of the extremities and are arranged symmetrically chiefly
over the nose, cheeks, ears, and dorsal surfaces of the hands. They may arise
on other areas, including the cornea, and in this location cause scars that
interfere with vision. Itching and burning, as well as mild constitutional
symptoms, may precede the outbreak of skin lesions, which appear in crops.
These begin as erythematous macules that rapidly develop into vesicles and bullae,
which in the course of three or four days dry up with the formation of adherent
brown crusts. Some of the bullae become umbilicated, forming a central punctum
about which are the remains of the bulla; the whole surrounded by a mildly
inflammatory zone, so that the appearance simulates a vaccination vesicle.
Fresh crops of lesions appear at various intervals, which in summer may be so
short that they are in-determinate. The itching may lead to lichenification
that persists through the winter. In some cases of hydroa vacciniforme, porphyrinuria
occurs so that the urine fluoresces under Wood's light. The disease in many
respects resembles the congenital type of porphyria. The treatment of hydroa
vacciniforme is the avoidance of exposure to sunlight and the elements and the
use of nicotinic acid, quinacrine hydrochloride, and estrogens. Locally sun
screens and hydrocortisone ointment are useful.
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Symptomatology
- symptomatology
- Objective Symptoms
- Elementary Lesions
- General Diagnosis
- Diagnostic Detail
- Regional Prediliection
- Skin Disorders
- Radiation Therapy
- Radiation For Skin
- Application of Radiation is Great
- Dosage Of Radiotherapy
- Radiation Therapy Side Effects
- SURGICAL DIATHERMY
- Current and Apparatus of Surgical Diathermy
- Operative Technique of Surgical Diathermy
- Indications for Surgical Diathermy
- Dermatoses Due To Physical Causes
- Burns
- Miliaria
- Treatment of miliaria
- Erythema Ab Igne
- Injuries Due To Cold
- Chilblain
- Frostbite
- Erythrocyanosis Crurum
- Angiokeratoma Of Mibelli
- Cutis Marmorata ( Livedo Reticularis )
- Sunburn
- Chronic Actinic Dermatitis
- Ephelis
- Xeroderma Pigmentosum
- Colloid Degeneration Of The Skin
- Hydroa Vacciniforme
- Porphyria
- Roentgen And Radium Dermatitis
- Local Clinical Reactions
- Acute Radiodermatitis