Does Lisinopril Cause Acne or Other Skin Problems?

Lisinopril is not a recognized cause of acne. No published studies or adverse-event databases identify acne as a side effect of this widely prescribed blood pressure medication. That said, lisinopril belongs to a drug class called ACE inhibitors that can cause a surprisingly diverse range of other skin problems, from itching and rashes to serious swelling and blistering. Because some of these reactions can produce bumps, redness, or irritation on the face, it is easy to see why someone might mistake them for acne breakouts.

Why Lisinopril Gets Blamed for Acne

People searching for a connection between lisinopril and acne are usually noticing real changes in their skin and trying to figure out the cause. The confusion makes sense: some ACE inhibitor skin reactions look superficially like acne. Eczematous rashes can produce red, bumpy patches. Drug-induced itching leads to scratching, which can create irritated spots and even secondary infections that resemble pimples. Angioedema can cause facial puffiness and redness. None of these is acne in the medical sense, which involves clogged pores, excess oil production, and specific bacteria. But to a person staring at new facial skin problems that started after beginning a medication, the distinction is not obvious.

If you started lisinopril and your skin changed, the explanation is almost certainly one of the real ACE inhibitor skin reactions described below rather than true acne. Identifying which reaction you are dealing with matters because the treatments are completely different.

How Lisinopril Causes Skin Problems

Lisinopril works by blocking an enzyme called ACE, which normally converts one hormone into another to raise blood pressure. Blocking that enzyme is the whole point of the drug. But ACE also breaks down bradykinin, a molecule that dilates blood vessels and promotes inflammation. When ACE is inhibited, bradykinin builds up in the body. That accumulation is responsible for most of the skin side effects associated with lisinopril and other ACE inhibitors.¹ Excess bradykinin increases the permeability of small blood vessels, which can trigger swelling, itching, and various inflammatory skin responses. Other vasoactive substances like substance P also accumulate, compounding the problem.

Itching Without a Visible Rash

One of the more frustrating skin complaints linked to ACE inhibitors is itching that occurs without any obvious rash. You feel the urge to scratch, but when you look at your skin, there is nothing there except scratch marks you have made yourself. This is called drug-induced pruritus, and it is thought to result directly from elevated bradykinin levels rather than from an allergic response.² The itch can be localized to one area or spread across the entire body. What makes it particularly annoying is that standard antihistamines, the kind most people reach for when something itches, often do not help much because the itching is driven by bradykinin rather than histamine.

If you are experiencing generalized itching that started after beginning lisinopril and antihistamines are not working, that pattern itself is a clue that the medication could be the culprit.

Eczema-Like Rashes

ACE inhibitors can also produce eczematous skin reactions, which look like patches of red, scaly, and sometimes weepy skin. A study of patients who developed these reactions while taking ACE inhibitors or related blood pressure drugs found that the rash was widespread in most cases, though it could also be limited to just one area, with the lower legs being especially common. The rash developed anywhere from a few months to over two years after starting the medication, and it typically came with moderate-to-severe itching that did not respond well to antihistamines.³ That long delay between starting the drug and developing the rash is one reason these reactions are so often missed. By the time the skin problems appear, neither the patient nor the doctor is thinking about a medication started months or years earlier.

Angioedema

The most serious skin-related side effect of lisinopril is angioedema, a rapid swelling that typically affects the lips, tongue, and face. Unlike a simple allergic reaction, ACE inhibitor-induced angioedema is driven by bradykinin rather than histamine, which is why epinephrine and antihistamines may not fully resolve it.⁴ While rare overall, angioedema can be life-threatening when swelling narrows the airway.

Several risk factors make angioedema more likely. Black Americans face roughly four and a half times the risk compared to white patients, even after adjusting for other variables. The first 30 days on the medication are the most dangerous window, with a similarly elevated risk. And among ACE inhibitors specifically, lisinopril and enalapril each carry about double the risk compared to captopril.⁵ Interestingly, the dose of the ACE inhibitor does not appear to affect the risk, meaning that taking a lower dose is not protective against this reaction. If you notice any sudden swelling of your face, lips, or tongue while taking lisinopril, treat it as a medical emergency.

One case report describes angioedema triggered not at the start of lisinopril therapy but years later, when a soft-tissue infection and temporary kidney problems appeared to amplify the bradykinin system enough to push a previously stable patient over the threshold.⁴ This is a useful reminder that being on lisinopril for years without problems does not guarantee you are permanently in the clear.

Blistering Reactions

Among the rarer but more alarming skin reactions tied to lisinopril are blistering disorders. These involve the immune system attacking the layers of the skin, causing fluid-filled blisters that can be painful and slow to heal. Bullous pemphigoid, a condition where blisters form on the outer skin, has been reported in association with lisinopril, with at least one published case documenting a dose-response pattern where higher doses worsened the blistering.⁶

Blisters can also form inside the mouth. One case involved a woman who developed oral blisters and ulcers three weeks after starting lisinopril. Her doctors initially suspected pemphigus, another autoimmune blistering disorder, but further testing suggested the reaction was allergic rather than autoimmune in the traditional sense. After stopping lisinopril, the blisters resolved completely within a month.⁷ These blistering reactions are rare enough that they sometimes stump even dermatologists on the first visit. If you develop unexplained blisters while on an ACE inhibitor, mentioning the medication to your doctor is worth doing.

Psoriasis Flares

If you already have psoriasis, lisinopril can make it worse. A narrative review of ACE inhibitor skin effects identifies psoriasis as one of the three main cutaneous adverse effects of the drug class, alongside angioedema and pemphigus.⁸ The flare can be delayed substantially. One published case describes a man whose chronic plaque psoriasis worsened 27 months after starting lisinopril. When the drug was stopped, his psoriasis improved significantly.⁹

Again, that multi-year lag is the tricky part. A psoriasis patient whose condition was stable for years and who then experiences a flare is unlikely to connect it to a blood pressure pill started two years earlier. The psoriasis looks like psoriasis, not like a drug reaction, and it behaves like psoriasis, responding partially to topical treatments but never fully clearing while the medication continues. If your psoriasis has been harder to control since starting an ACE inhibitor, the drug is worth discussing with your dermatologist even if the timeline seems too long to matter.

Less Common Skin Reactions

A handful of other skin problems appear in the medical literature as rare complications of lisinopril, each supported by case reports rather than large studies.

Vasculitis and purpura: Lisinopril has been linked to Henoch-Schönlein purpura, a condition where small blood vessels in the skin become inflamed, producing a distinctive rash of purple or reddish spots, usually on the legs. In at least one published case, the diagnosis was made based on the known association between ACE inhibitors and this type of vascular inflammation, and the rash resolved after stopping lisinopril.¹⁰
Hair loss: While not a skin rash, hair thinning or loss is a dermatological complaint that has been connected to lisinopril. A published case report documented a man whose hair loss began while on lisinopril and resolved within four weeks of switching to a different blood pressure medication. A formal causality assessment rated the connection as “probable.”¹¹
Photosensitivity: Some ACE inhibitors have been reported to cause sun-sensitivity reactions, though the evidence is limited mainly to captopril and quinapril rather than lisinopril specifically.¹² Still, if you notice unusual sunburn or a rash in sun-exposed areas while on any ACE inhibitor, it is worth considering the drug as a possible contributor.

Why the Timeline Trips People Up

A recurring theme across nearly all of these reactions is that they can appear months or even years after starting lisinopril. Eczematous reactions have been documented appearing anywhere from four to 30 months into therapy.³ Psoriasis flares have been reported after more than two years.⁹ Angioedema risk is highest in the first month but can surface years later under the right conditions.⁵

Most people and many doctors expect drug side effects to show up quickly. When a reaction has been simmering for months before it becomes visible, the connection to the medication becomes counterintuitive. This is one area where being your own advocate matters. If you develop a new or worsening skin condition while on lisinopril, mention the medication to your doctor even if you have been taking it for a long time.

Switching Medications

When a skin reaction is suspected to be caused by lisinopril, stopping the drug is the primary treatment. Most reactions, from rashes to blisters to hair loss, resolve within weeks to a couple of months after discontinuation. Supporting the skin through the recovery period with treatments like corticosteroid creams or antihistamines may help depending on the type of reaction.

The natural next question is what to take instead. ARBs (angiotensin receptor blockers, like losartan or candesartan) work on the same blood pressure system but through a different mechanism, and they do not cause bradykinin to build up in the same way. For most ACE inhibitor skin reactions, switching to an ARB resolves the problem. The hair loss case mentioned earlier, for instance, cleared up after the patient was moved to losartan.¹¹

Angioedema is the exception that deserves extra caution. In a trial of patients who had previously experienced ACE inhibitor-induced angioedema and were then switched to an ARB, about 8% experienced angioedema again. A similar recurrence rate of roughly 8% was seen in a larger heart failure trial using candesartan.¹³ That means the vast majority of people can safely switch, but a small percentage will react to ARBs as well. Patients who switch to a calcium channel blocker instead see similar resolution rates, making that class another reasonable alternative. The key takeaway is that if you experienced angioedema on lisinopril, your doctor should monitor you closely for several months after switching to any new blood pressure medication, regardless of the class.

When Skin Changes on Lisinopril Are Not the Drug’s Fault

It is worth acknowledging that not every skin change during lisinopril therapy is caused by lisinopril. Many people who take blood pressure medication are in their 40s, 50s, and beyond, an age when new skin conditions like rosacea, seborrheic dermatitis, and age-related dryness commonly appear for the first time. Hormonal shifts, stress, other medications, and even seasonal changes can all alter the skin. The fact that a skin problem appeared after starting lisinopril does not by itself prove the drug is responsible.

That said, certain patterns raise the index of suspicion: itching that does not respond to antihistamines, a rash concentrated on the lower legs, facial swelling that comes and goes, or blistering with no other explanation. If stopping lisinopril temporarily leads to improvement and restarting it brings the problem back, that rechallenge pattern is about as close to proof as you can get in an individual case. Your doctor can help weigh the risks and benefits of a trial off the medication, especially since blood pressure still needs to be managed during any drug holiday.

1
Acta Dermato-Venereologica. Angiotensin-converting enzyme inhibitors as inducers of adverse cutaneous reactions
2
PubMed Central. Pruritus Associated with Commonly Prescribed Medications in a Tertiary Care Center
3
PubMed. Eczematous reactions due to angiotensin-converting enzyme inhibitors or angiotensin II receptor blockers
4
PubMed Central. Lisinopril-Induced Angioedema Triggered by Tattoo Cellulitis and Acute Kidney Injury: A Case Report
5
PubMed. Black Americans have an increased rate of angiotensin converting enzyme inhibitor-associated angioedema
6
PubMed Central. Lisinopril-associated bullous pemphigoid in an elderly woman: a case report of a rare adverse drug reaction
7
PubMed. Oral bullous eruption after taking lisinopril–case report and literature review
8
Expert Review of Clinical Pharmacology. Angiotensin converting enzyme and angiotensin converting enzyme inhibitors in dermatology: a narrative review
9
PubMed Central. Delayed drug-induced liver injury (DILI) and flare of chronic plaque psoriasis secondary to lisinopril use
10
PubMed Central. An Unusual Complication of Lisinopril: A Report of Iatrogenic Henoch-Schönlein Purpura
11
PubMed. Lisinopril-Induced Alopecia: A Case Report
12
European Heart Journal – Cardiovascular Pharmacotherapy. Photoinduced skin reactions of cardiovascular drugs—a systematic review
13
US Pharmacist. Cross-Reactivity of ACE Inhibitor–Induced Angioedema with ARBs