Hi, As you said you suffer from psoriasis and that is worsened after treatment of lichen sclerous. You also have doubt that daily bathing is responsible. I would like to say about few lines for psoriasis....Psoriasis is a chronic relapsing and autoimmune disease. There may be scaly plaques on various parts of the body, scaly lesions on the scalp and sometimes joint pain may be there due to psoritic arthritis. Exact cause is not known. Genetic tendency,autoimmunitity, stress, dry wheather...etc may be responsible for precipitation and exacerbation of the disease. You did not say what treatment you took for lichen sclerosus. If your doctor has given oral steroids or steroid injections for lichen sclerosus..that would have worsen the psoriasis. I do not believe that daily bath is responsible. I usually recommend cap acitretin 10 mg twice a day along with methotraxate 15 mg weekly in three devided doses 12 hourly. This may be taken for long time till good response. Blood tests may be done to monitor the treatment. Apply mild steroid cream or calcipotriol oint on the lesions. For scalp psoriasis,tar shampoo may be done. You may apply moisturiser to improve the skin texture. Avoid soap bath for few weeks.Avoid stress and worries as that might worsen psoriasis. I hope you got my answer. Thanks. Dr. Ilyas Patel MD