Internal and external piles are both forms of hemorrhoidal disease, but they develop in different parts of the anal canal and often produce different symptoms. Internal piles form inside the anal canal and commonly cause painless bright-red bleeding or prolapse. External piles develop beneath the sensitive skin around the anus and are more likely to cause swelling, tenderness or pain, particularly when a blood clot forms.
The distinction matters because diagnosis, grading and treatment are not identical. Someone can also have both internal and external hemorrhoids at the same time.
The NIDDK overview of hemorrhoids distinguishes external hemorrhoids under the skin around the anus from internal hemorrhoids arising in the lining of the anus and lower rectum.
Internal vs External Piles at a Glance
| Feature | Internal piles | External piles |
|---|---|---|
| Location | Inside the anal canal | Beneath skin around the anus |
| Typical sensation | Often painless unless significantly prolapsed or complicated | More likely to be tender or painful |
| Common symptom | Bright-red bleeding or prolapse | Lump, swelling, itching or discomfort |
| Can thrombose? | Thrombosis is not their typical presentation | Yes; thrombosis can cause sudden severe pain |
| Can prolapse? | Yes | They are already external to the anal canal |
| Graded I–IV? | Yes, according to prolapse | Not by the same internal hemorrhoid grading system |
| Common office procedures | Banding, sclerotherapy, infrared coagulation for selected cases | These internal procedures are not used in the same way for external disease |
| Surgery | Selected advanced/refractory cases | May be considered for selected large, symptomatic or thrombosed cases |
This table is a guide rather than a self-diagnosis tool. Examination is sometimes necessary because prolapsed internal hemorrhoids can appear outside the anus and be mistaken for external piles.
Why Do Internal and External Piles Feel Different?
The difference is largely anatomical.
Internal hemorrhoids originate above the dentate line and are covered by mucosal tissue that is much less sensitive to ordinary touch and pain. External hemorrhoids originate below this boundary and are covered by pain-sensitive skin.
This explains one of the most useful clinical distinctions: internal piles can bleed noticeably without causing much pain, while an external hemorrhoid containing a blood clot can be extremely painful.
The American Society of Colon and Rectal Surgeons explanation of internal and external hemorrhoids notes that internal hemorrhoids are covered by less pain-sensitive mucosa, whereas external hemorrhoids are covered by sensitive skin.
That does not mean an internal hemorrhoid can never hurt. A significantly prolapsed or strangulated internal hemorrhoid can become painful, and another condition such as an anal fissure can also be responsible for pain.
What Are Internal Piles?
Internal piles are symptomatic hemorrhoidal tissues that arise inside the anal canal.
Because they begin internally, a person may not initially see or feel a lump. Instead, one of the first signs may be bright-red blood during or after a bowel movement.
Common symptoms include painless rectal bleeding, tissue protruding during bowel movements, mucus or moisture around the anus, itching related to prolapse and difficulty cleaning after stool.
According to NIDDK guidance on hemorrhoid symptoms, internal hemorrhoids commonly present with bright-red rectal bleeding or prolapse. Internal hemorrhoids that have not prolapsed are usually not painful.
Can internal piles come outside?
Yes. This is called prolapse.
An internal hemorrhoid can move downward and protrude through the anal opening. This sometimes causes confusion because the patient can then see or feel tissue outside and assume it has become an “external pile.”
It is still an internal hemorrhoid based on where the tissue originated.
What are the four grades of internal piles?
Internal hemorrhoids are commonly classified according to prolapse:
| Grade | What happens |
|---|---|
| Grade I | Remains inside; no external prolapse |
| Grade II | Prolapses during straining but returns inside spontaneously |
| Grade III | Prolapses and usually requires manual reduction |
| Grade IV | Remains prolapsed and cannot normally be pushed back |
The ASCRS hemorrhoid classification uses this Grade I–IV system to describe internal hemorrhoid prolapse.
Grade is useful, but it is not the only treatment criterion. Bleeding, pain, external disease, thrombosis, response to conservative care and the patient’s overall health also matter.
What Are External Piles?
External piles develop beneath the skin around the anal opening.
Because the surrounding skin contains pain-sensitive nerves, symptoms may be easier to feel than with uncomplicated internal hemorrhoids. External disease can cause swelling, irritation, itching, pressure or a noticeable lump.
External hemorrhoids are not necessarily severely painful. Pain becomes particularly important when a blood clot develops inside one.
What is a thrombosed external pile?
A thrombosed external hemorrhoid contains a blood clot.
It can appear as a firm, tender swelling near the anal opening and may cause sudden or intense pain.
The 2024 ASCRS hemorrhoid-management guideline describes thrombosed external hemorrhoids as painful lumps at the anal verge and notes that selected patients may benefit from early surgical excision.
Treatment depends on severity, timing, examination findings and the individual patient. A painful anal lump should therefore not automatically be treated with whatever remedy was previously used for bleeding internal piles.
Which Is More Painful: Internal or External Piles?
External piles are generally more likely to cause noticeable pain, especially when thrombosed.
Internal hemorrhoids typically produce bleeding or prolapse rather than significant pain in their uncomplicated early stages. Severe pain with suspected “internal piles” deserves assessment because it may indicate significant prolapse, thrombosis, an anal fissure, an abscess or another anorectal problem.
The distinction is useful, but symptoms alone cannot confirm the diagnosis.
Which Type of Piles Causes Bleeding?
Internal piles are particularly associated with bright-red bleeding during bowel movements, although external hemorrhoids can also bleed if irritated or if overlying skin breaks.
Blood may appear on toilet paper, streak the stool or drip into the toilet.
Rectal bleeding should not automatically be attributed to hemorrhoids. The NIDDK information on gastrointestinal bleeding identifies several potential causes of lower gastrointestinal bleeding, including hemorrhoids, anal fissures, inflammatory bowel disease, polyps and colorectal cancer.
Persistent, unexplained, recurrent or substantial bleeding therefore warrants medical evaluation.
Can You Have Internal and External Piles Together?
Yes.
Some people have mixed hemorrhoidal disease, meaning both internal and external components are present.
This matters because treating only one component may not address the patient’s main symptoms. For example, an internal procedure intended to reduce bleeding or prolapse will not automatically remove an uncomfortable external component.
A clinical examination therefore gives more useful information than choosing treatment simply from an online symptom description.
Are External Piles Graded Like Internal Piles?
No. The familiar Grade I, II, III and IV classification describes prolapse of internal hemorrhoids.
External hemorrhoids are evaluated according to features such as size, swelling, discomfort, thrombosis and their relationship with any internal hemorrhoidal disease.
This distinction is important because saying someone has “Grade III external piles,” for example, mixes two different classification concepts.
What Causes Internal and External Piles?
Internal and external hemorrhoidal symptoms share many contributing factors.
Repeated straining, constipation, prolonged time on the toilet, chronic diarrhea, pregnancy, aging-related changes and frequent heavy lifting are among recognized contributors.
The NIDDK explanation of hemorrhoid causes specifically identifies straining, prolonged toilet sitting, chronic constipation or diarrhea, low fiber intake, pregnancy and frequent heavy lifting among associated factors.
One practical way to understand the process is:
hard or difficult stool → repeated straining → increased pressure around hemorrhoidal tissue → enlargement, bleeding, prolapse or external swelling
This is why bowel-habit management remains important even when a patient ultimately requires a procedure.
How Does a Doctor Know Whether Piles Are Internal or External?
Diagnosis generally begins with symptoms and a physical examination.
External hemorrhoids may be visible during inspection around the anus. Internal hemorrhoids may require a digital rectal examination and visual assessment of the anal canal, often with an anoscope when clinically appropriate.
The NIDDK guide to diagnosing hemorrhoids explains that external hemorrhoids can often be identified by inspecting the anal area, while examination for internal disease may involve a digital rectal examination and anoscopy or related procedures.
The 2026 American Gastroenterological Association clinical update also recommends anoscopy, whenever possible, for new patients with suspected hemorrhoids before treatment so that the diagnosis can be confirmed.
If symptoms or risk factors suggest another bowel condition, additional investigation may be appropriate.
Is Treatment Different for Internal and External Piles?
Yes. The type of hemorrhoid affects which procedures are anatomically appropriate.
Both types may initially benefit from measures that improve bowel habits, reduce straining and address constipation. However, procedural treatment differs substantially.
Treatment for internal piles
Many mild internal hemorrhoids can initially be managed through dietary fiber, suitable fluid intake and healthier bowel habits.
When bleeding or prolapse persists, selected internal hemorrhoids may be treated through procedures such as rubber-band ligation, sclerotherapy or infrared coagulation.
ASCRS states that office procedures such as rubber-band ligation, infrared coagulation and sclerotherapy are treatments for internal hemorrhoids, not ordinary external hemorrhoids.
Its 2024 guideline recommends dietary and behavioral modification as primary first-line therapy and states that most symptomatic Grade I–II and selected refractory Grade III internal hemorrhoids can be treated with office procedures.
Treatment for external piles
Non-thrombosed external hemorrhoids are often initially managed according to symptoms and bowel habits.
A severely painful thrombosed external hemorrhoid is different. Depending on timing, severity and patient circumstances, clinical treatment or excision may sometimes be appropriate.
Large symptomatic external hemorrhoids or combined internal and external disease may require a different surgical discussion from uncomplicated internal piles.
This is why the question “What is the best piles treatment?” has no useful universal answer until the type of disease is established.
What Is the Role of Ayurvedic Piles Treatment?
Ayurvedic management traditionally discusses hemorrhoids under Arsha and may combine bowel-habit guidance, diet, individualized medicines and procedure-based approaches for selected patients.
Nepal Ayurveda an ayurvedic hospital in Kathmandu provides Ayurvedic piles treatment in Thamel, Kathmandu with treatment selected after clinical assessment rather than assuming that every patient needs the same intervention.
For an internal-versus-external comparison, the most important principle is patient selection. A procedure appropriate for selected internal hemorrhoidal tissue should not be assumed to treat every external lump, thrombosis or other anorectal condition.
Kshara Karma for internal piles
Kshara Karma involves controlled application of an alkaline Ayurvedic preparation to selected tissue.
A small randomized study involving 50 patients compared Apamarga Kshara application with sclerotherapy in first- and second-degree internal piles. The findings were encouraging, but the sample was small and the study does not establish universal superiority or suitability. Readers who want to examine the evidence can review the published clinical trial of Apamarga Kshara for first- and second-degree piles.
Kshara Sutra for piles
Kshara Sutra therapy is an Ayurvedic para-surgical approach in which a specially prepared medicated thread may be used for selected anorectal conditions.
Published comparative research has evaluated Kshara Sutra ligation against rubber-band ligation in Grade II and III hemorrhoids, but one such trial included only 20 patients. It is therefore better viewed as limited clinical evidence rather than proof that Kshara Sutra is superior to established alternatives.
Patients considering Ayurvedic medicines should also disclose all herbs, supplements and conventional medicines they already take. The National Center for Complementary and Integrative Health safety information on Ayurvedic medicine notes that some Ayurvedic preparations may contain potentially toxic amounts of metals such as lead, mercury or arsenic.
Why an Examination Matters Before Choosing Treatment
Symptoms often overlap.
A lump outside the anus may represent an external hemorrhoid, a prolapsed internal hemorrhoid, a residual skin tag or another anorectal condition. Pain and bleeding can also occur with anal fissures and other disorders.
Treatment selection should therefore follow this sequence:
symptoms → examination → internal/external/mixed classification → internal grade where applicable → contributing bowel factors → treatment choice
That pathway helps avoid a common mistake: deciding on banding, Kshara treatment, medicines or surgery before confirming what is actually causing the symptoms.
If bleeding, prolapse, swelling or discomfort keeps recurring, an Ayurvedic doctor consultation can be used to discuss examination findings and appropriate next steps.
When Should You Seek Medical Care?
Arrange a professional assessment when rectal bleeding persists or recurs, a lump is significantly painful, tissue repeatedly prolapses, symptoms do not improve with conservative care or you are unsure that the problem is actually hemorrhoids.
Seek prompt or urgent medical care for severe anal pain with substantial rectal bleeding, particularly when bleeding occurs with fever, diarrhea, abdominal pain, dizziness, weakness or fainting.
The NIDDK hemorrhoid treatment guidance recommends urgent medical care for severe anal pain and rectal bleeding, particularly when accompanied by abdominal pain, diarrhea or fever.
Can Internal and External Piles Be Prevented?
Not every case can be prevented, but reducing constipation and unnecessary straining may lower avoidable pressure on hemorrhoidal tissues.
Useful long-term habits include maintaining adequate dietary fiber, drinking an appropriate amount of fluid for your health needs, avoiding habitual straining, avoiding unnecessarily long periods sitting on the toilet and seeking treatment for persistent constipation or diarrhea.
These habits matter after treatment as well. A procedure can treat problematic hemorrhoidal tissue, but it does not automatically remove the bowel habits that contributed to symptoms.
Internal vs External Piles: The Key Difference to Remember
The simplest distinction is:
Internal piles usually announce themselves through bleeding or prolapse. External piles are more likely to announce themselves through a lump, tenderness or pain especially when thrombosed.
But symptom patterns are not a substitute for diagnosis.
Knowing whether the problem is internal, external or mixed helps determine whether conservative care, an office procedure, an Ayurvedic procedure or another surgical approach is appropriate.
For persistent bleeding, prolapse, swelling or anal pain, discuss your symptoms before choosing a procedure. Nepal Ayurveda provides assessment and Ayurvedic piles treatment in Kathmandu, with treatment options considered according to individual clinical findings.
FAQs
Can internal piles turn into external piles?
Not literally. Internal and external hemorrhoids are defined by where they originate. An internal hemorrhoid can prolapse through the anal opening and become visible outside, but it remains a prolapsed internal hemorrhoid rather than changing into an external one.
Which type of piles bleeds more?
Bright-red bleeding is particularly characteristic of internal hemorrhoids. External hemorrhoids can bleed when irritated or when the skin over a thrombosed hemorrhoid breaks, but bleeding alone cannot reliably identify the cause.
Which type of piles is more painful?
External hemorrhoids are generally more likely to hurt because they occur beneath sensitive perianal skin. A thrombosed external hemorrhoid can be especially painful. Uncomplicated internal hemorrhoids are commonly painless, although significant prolapse or complications can cause pain.
Can someone have both internal and external piles?
Yes. Internal and external hemorrhoids can occur together, producing mixed hemorrhoidal disease. Treatment needs to consider both components rather than assuming one procedure will address every symptom.
Are external piles classified into four grades?
No. Grades I–IV describe the degree of internal hemorrhoid prolapse. External hemorrhoids are assessed according to factors such as symptoms, swelling and thrombosis rather than using the same prolapse grading system.
Can piles be treated without surgery?
Often, yes. Dietary fiber, appropriate fluid intake, reducing straining and improving bowel habits are first-line approaches for many patients. Persistent or advanced symptoms may require office procedures or surgery depending on the type of hemorrhoid and clinical findings.