What is Psoriasis

Psoriasis is a type of potentially unwanted program (PUP) that specifically targets Mac computers. Despite sharing a name with a well-known skin condition, Psoriasis in the context of Mac computers refers to a malicious software designed to inject advertisements into websites you visit and redirect your browser search queries. This adware is not related to the medical condition of psoriasis but is rather an intrusive software that can compromise your browsing experience and potentially your privacy. Psoriasis operates by hijacking your browser’s homepage and search engine, displaying unwanted advertisements that do not originate from the sites you are browsing. It typically does this through a browser extension or program installed on your computer. Once installed, it redirects your browser search queries through its own search mechanism, which often leads to search results from search engines like Yahoo, done likely to generate advertising revenue. To remove Psoriasis Adware from your Mac, you can follow a series of steps that involve removing malicious profiles, deleting malicious apps, resetting browsers back to default settings, and running a scan with a reputable antivirus program like Spyhunter or Malwarebytes for Mac.

Psoriasis adware

Adware shows following message in macOS:

“Psoriasis” will damage your computer.
This file was downloaded on a unknown date.
Show in Finder

How Psoriasis infects Mac computers

Psoriasis Adware can be installed knowingly or unknowingly by users. It is often offered through advertisements or bundled with other software, which can lead to confusion about its origin. Unfortunately, some free downloads do not adequately disclose that other software will also be installed, leading to Psoriasis being installed without the user’s knowledge. To prevent future infections, it’s important to be cautious about the software you download and install. Always opt for custom installation to deselect any additional unwanted applications. Keep your software and operating system updated to protect against vulnerabilities that adware might exploit. Additionally, consider using reputable antivirus software to provide real-time protection against threats.

  1. Download Psoriasis Removal Tool
  2. Remove Psoriasis from Login Items
  3. Remove/Uninstall Psoriasis from Applications
  4. Remove Psoriasis from browsers
  5. Reset browser settings
  6. Remove Psoriasis files and folders
  7. Block Psoriasis ads and pop-ups
  8. How to protect from threats, like Psoriasis

Download Psoriasis Removal Tool

Download Spyhunter for Mac

To remove Psoriasis completely, we recommend you to use Spyhunter for Mac. It can help you remove files, folders, and registry keys of Psoriasis and uninstall hijackers, toolbars, and unwanted add-ons from the Safari browser. The trial version of Spyhunter for Mac offers virus scan and 1-time removal for FREE.

Alternative Removal Tool

Download CleanMyMac

To remove Psoriasis completely, we recommend you to use CleanMyMac. It can help you remove files, folders, and registry keys of Psoriasis and uninstall hijackers, toolbars, and unwanted add-ons from the Safari browser.

Remove Psoriasis manually for free

Note: Psoriasis sets up to start on macOS startup. Therefore, before starting the removal, perform these steps:

  1. Open System Preferences, choose Users & Groups.
  2. Choose your account (set up as Current User).
  3. Click Login Items tab.
  4. Find “Psoriasis” entry. Select it, and click the “-“ (minus) button to remove it.

Note 2: Psoriasis won’t quit just by closing it, therefor use Force Quit to end the process.

  1. Press 3 buttons at the same time: Option, Command, and Esc (Escape). This is similar to Control-Alt-Delete on a Windows PC.
  2. Choose Psoriasis in the list.
  3. Click Force Quit button.

Here is a manual step-by-step tutorial for full Psoriasis removal from your computer. This works 99% and was checked with the latest versions of Psoriasis installer on operating systems with the latest updates and browser versions.

Remove Psoriasis from Applications

Remove Psoriasis from Mac:

  1. In the Finder sidebar, click Applications.
  2. Psoriasis might have an Uninstaller. If you see Uninstall Psoriasis or Psoriasis Uninstaller, double-click it and follow the onscreen instructions.
  3. Otherwise, drag Psoriasis from the Applications folder to the Trash (located at the end of the Dock).
  4. Then choose Finder > Empty Trash.

Cannot uninstall Psoriasis

If you can’t uninstall Psoriasis using instructions above, or it keeps coming back, you can use free AppCleaner for Mac to remove all residual data and libraries of Psoriasis. Follow instructions below:

  1. Download free AppCleaner.
  2. Drag Psoriasis from Applications folder to AppCleaner window.
  3. Choose files and folders you want to remove along with Psoriasis.
  4. Click Delete button.

Remove Psoriasis add-on from your browsers

Removing Psoriasis from Applications often does not bring the desired effect. It is a browser extension, and it may still be active in Google Chrome and Mozilla Firefox. Here are instructions on how to remove the Psoriasis extension from your browsers manually.


  1. Start Safari on your Mac, click Safari to open drop-down menu and choose Preferences
  2. Click Extensions tab.
  3. Find Psoriasis extension.
  4. Click Uninstall button to remove it.

Google Chrome:

  1. Start Google Chrome browser
  2. In address box type (or copy-paste) chrome://extensions.
  3. Find Psoriasis extension.
  4. Click the trash can icon to remove it.

Mozilla Firefox:

  1. Start Mozilla Firefox browser.
  2. In address box type (or copy-paste) about:addons.
  3. Choose Psoriasis extension.
  4. Click Disable or Remove button.

Reset browser settings

To finish Psoriasis removal, reset your browser settings to make sure, there are no leftover items in browser folders.

Reset Safari:

  1. Start Safari on your Mac, click Safari to open drop-down menu and choose Preferences
  2. Go to the Privacy section of Safari’s preferences.
  3. Click Remove All Website Data button.
  4. In the opened window, click Remove Now button to remove data stored by websites in Safari.
  5. Go to the Advanced section of Safari’s preferences.
  6. Click the Show Develop menu in menu bar option.
  7. In the menu, click Develop and select Empty Caches from this menu.
  8. Again, go to Safari menu and choose Clear History….
  9. Choose to clear all history and click Clear History button.

Reset Google Chrome:

  1. Start Google Chrome browser
  2. In address box type (or copy-paste) chrome://settings.
  3. Scroll down and find Show advanced settings link.
  4. Click on it and scroll down to the bottom again.
  5. Click Reset settings button and click Reset to confirm.

Reset Mozilla Firefox:

  1. Start Mozilla Firefox browser.
  2. In address box type (or copy-paste) about:support.
  3. Click Refresh Firefox… button.
  4. Click Refresh Firefox to confirm.

Remove following files and folders of Psoriasis

~/Library/Application Support/.[random_string]/Services/com.Psoriasis.service.app
/Library/Application Support/.[random_string]/System/com.Psoriasis.system

Download AdGuard for Mac to block malicious pop-ups, that promote Psoriasis

AdGuard is the best ad-blocker, internet filtering, and internet security application for macOS. It can cut out unwanted banners from site pages, block pop-ups, stop redirects, and prevent users from visiting potentially dangerous resources. Use it to stop ads promoting Psoriasis in browsers.

adguard for mac

Download AdGuard for Mac

How to protect Mac OSX from adware, like Psoriasis

malwarebytes for mac

Mac OSX is known to be one of the safest operating systems, and for a long time, there was no need for antivirus products for Mac. But with the growing popularity of Mac computers and notebooks and evolving technology, viruses, trojans, adware, toolbars, hijackers, and other malware paved the way for Mac users. We recommend you to use one of the best anti-malware for Mac available — Malwarebytes for Mac.

Download Malwarebytes for Mac
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James Kramer
Hello, I'm James. My website Bugsfighter.com, a culmination of a decade's journey in the realms of computer troubleshooting, software testing, and development. My mission here is to offer you comprehensive, yet user-friendly guides across a spectrum of topics in this niche. Should you encounter any challenges with the software or the methodologies I endorse, please know that I am readily accessible for assistance. For any inquiries or further communication, feel free to reach out through the 'Contacts' page. Your journey towards seamless computing starts here