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Psoriasis presents as red, scaly, itchy patches at various body sites; commonly extensors like knee, elbow, scalp, hands.
Facial involvement is less common but may involve the hair line, that may extend on to the adjacent facial skin.
Diagnosis of psoriasis is clinical; skin biopsy may be confirmatory in doubtful cases.
Psoriasis is a steroid responsive dermatosis and treatment of limited disease includes potent topical steroids e.g
clobetasol propionate halobetasol propionate in cream/oint/lotions.
Topical vitamin D analogues e,g calcipotriol, calcitriol are also among the treatment options.
Systemic treatment may be started in those who have widespread Or severe involvement (e.g
pustular psoriasis,
erythrodermic psoriasis).
Systemic treatment options include
methotrexate, cyclosporine, phototherapy etc.
Methotrexate sometimes may also be started in those with limited involvement e.g recalcitrant involvement of hands and feet.
Psoriasis is chronic and can recur after seemingly complete cure.
Factors that are known to exacerbate psoriasis include drugs, alcohol, infection, stress etc
These are all prescription drugs. I would suggest regular treatment under the supervision of a
dermatologist.
The treating doctor after thorough assessment of the severity and extent of involvement would prescribe accordingly and can modify or change treatment depending on the response to treatment.
Regards