Different types of plan b

If you meant emergency contraception, the correct product information should come from a pharmacist or sexual-health clinician; it is not a dermatology diagnosis. In dermatology, a similar-sounding search may lead to lichen planus, an inflammatory condition that can affect skin, the mouth, scalp, nails or genital lining.

Skin lichen planus may cause itchy, purple or reddish bumps and flat-topped patches, often on the wrists, ankles or lower back. Other forms can produce mouth soreness, scalp hair loss, nail changes or discomfort in genital areas. The pattern and examination matter because itchy skin or bumps have many possible causes.

Take clear photographs when a rash changes, list new medicines and note whether itching, mouth soreness, hair loss or nail changes are present. Do not start strong steroid treatment without medical advice, especially on the face, groin or thin skin. A clinician may use topical corticosteroids for local inflammation or oral corticosteroid treatment for selected widespread or severe disease. Learn more about [Lichen Planus](/conditions/lichen-planus/) and [Itchy Skin](/symptoms/itchy-skin/).

Arrange medical review for a new persistent itchy rash, painful mouth sores, genital discomfort, scalp scaling with hair loss or nail changes. Seek prompt care if you cannot eat or drink because of mouth pain, if the rash blisters or becomes infected, or if symptoms begin soon after a new medicine. If you meant emergency contraception, seek time-sensitive advice from a pharmacist or clinician.

Do my bumps or patches fit lichen planus, or is another condition more likely? Could a medicine or contact exposure be contributing? Which treatment is appropriate for this body site, and how long should it be used? Do my mouth, scalp, nails or genital symptoms need separate examination?