Skin side effects of Plan B: rash, dryness, photosensitivity
Skin reactions are among the most visible side effects of medication and range from minor cosmetic concerns to medical emergencies. Plan B (Levonorgestrel) at 1.5mg may produce a range of skin effects depending on Levonorgestrel; this page covers what is typical, what is rare, and what calls for stopping the medication.
Common skin effects of Plan B
According to the prescribing information for Levonorgestrel, common skin reactions include mild rash, dryness, mild itching, transient flushing and (for some agents) photosensitivity that makes the skin more sensitive to UV. Plan B's primary mechanism is delaying or preventing ovulation when taken before the LH surge. Most are mild, appear in the first weeks and resolve without intervention or with simple measures (moisturiser, sunscreen).
Serious skin reactions
Severe skin reactions — Stevens-Johnson syndrome, toxic epidermal necrolysis, drug-induced hypersensitivity syndrome — are rare but life-threatening. Warning signs are a rash with fever, mucosal involvement (mouth, eyes), skin peeling, or rapidly spreading rash. Any of these on Plan B at 1.5mg is a medical emergency and reason to stop the medication and seek immediate care.
Frequently asked questions
Is a rash on Plan B dangerous? ▾
Most rashes on Plan B at 1.5mg are mild and resolve. A rash with fever, mucosal involvement, blistering or rapid spread is not — it requires emergency evaluation and stopping the medication.
Can Plan B cause sunburn or photosensitivity? ▾
Some medications including a subset of Hormones and Birth Control agents increase UV sensitivity, making sunburn occur faster. The prescribing information for Levonorgestrel lists this when documented. Sunscreen and avoiding peak sun exposure manage the risk.
More on Plan B
- With alcoholPlan B and alcohol — is it safe to drink?
- With foodShould Plan B be taken with food?
- Side effectsPlan B side effects: common, rare and warning signs
- Dosage guidePlan B dosage guide: how much to take and when
- OnsetHow fast does Plan B start working?
- DurationHow long does Plan B last?
The information on this website is provided for reference and educational purposes only. It does not replace consultation with a qualified healthcare professional.